diff --git a/test.gfa b/test.gfa
deleted file mode 100644
index 08a1d98..0000000
--- a/test.gfa
+++ /dev/null
@@ -1,331 +0,0 @@
-H	VN:Z:1.2
-S	0	ATGATAGCATGACTCAGACTG	DP:f:2	CB:Z:blue
-S	1	CACAGCATGTACGTGTCAGTC	DP:f:1	CB:Z:gray
-S	2	ATGCATGCATTCGTACATCAC	DP:f:2	CB:Z:blue
-S	3	AGCATGTACGTGTCAGTCGAT	DP:f:1	CB:Z:gray
-S	4	ACGTACATGCTGTGATGTACG	DP:f:1	CB:Z:gray
-S	5	TCAGATCGACTGACTCGTACA	DP:f:1	CB:Z:blue
-S	6	ATGCATCGATCGATCGAAATG	DP:f:2	CB:Z:blue
-S	7	CACGTACATGCTGTGATGTAC	DP:f:1	CB:Z:gray
-S	8	CGATGCATGCATTCGTACATC	DP:f:2	CB:Z:blue
-S	9	ACGATCAGATCGACTGACTCG	DP:f:1	CB:Z:blue
-S	10	GATCGACTGACACGTACATGC	DP:f:1	CB:Z:gray
-S	11	ATGCAGTGATGTACGAATGCA	DP:f:1	CB:Z:blue
-S	12	ACATGCTGTGATGTACGAATG	DP:f:1	CB:Z:gray
-S	13	ATCTGATCAGTCTGAGTCATG	DP:f:2	CB:Z:blue
-S	14	GACTCAGACTGATCAGATCGA	DP:f:2	CB:Z:blue
-S	15	ATGCATTCGTACATCACTGCA	DP:f:1	CB:Z:blue
-S	16	CGTACATGCAGTGATGTACGA	DP:f:1	CB:Z:blue
-S	17	AGTCGATCTGATCGTAGTATG	DP:f:2	CB:Z:blue
-S	18	CTGCATGTACGAGTCAGTCGA	DP:f:1	CB:Z:blue
-S	19	AGTCATGCTATCATTTCGATC	DP:f:2	CB:Z:blue
-S	20	CGATCGATGCATGCATTCGTA	DP:f:2	CB:Z:blue
-S	21	ATCAGATCGACTGACTCGTAC	DP:f:1	CB:Z:blue
-S	22	ATCGATCGATGCATGCATTCG	DP:f:2	CB:Z:blue
-S	23	ATGTACGAGTCAGTCGATCTG	DP:f:1	CB:Z:blue
-S	24	CAGTGATGTACGAATGCATGC	DP:f:1	CB:Z:blue
-S	25	GATCGATGCATGCATTCGTAC	DP:f:2	CB:Z:blue
-S	26	ACTGACTCGTACATGCAGTGA	DP:f:1	CB:Z:blue
-S	27	ACTACGATCAGATCGACTGAC	DP:f:2	CB:Z:blue
-S	28	ATGCATGCATCGATCGATCGA	DP:f:2	CB:Z:blue
-S	29	ACGATCAGATCGACTGACACG	DP:f:1	CB:Z:gray
-S	30	CGATCGATCGAAATGATAGCA	DP:f:2	CB:Z:blue
-S	31	GAAATGATAGCATGACTCAGA	DP:f:2	CB:Z:blue
-S	32	ACGAGTCAGTCGATCTGATCG	DP:f:1	CB:Z:blue
-S	33	CTACGATCAGATCGACTGACA	DP:f:1	CB:Z:gray
-S	34	ATGACTCAGACTGATCAGATC	DP:f:2	CB:Z:blue
-S	35	GTACATGCAGTGATGTACGAA	DP:f:1	CB:Z:blue
-S	36	CATGCATTCGTACATCACTGC	DP:f:1	CB:Z:blue
-S	37	GATCAGATCGACTGACACGTA	DP:f:1	CB:Z:gray
-S	38	TCATGCTATCATTTCGATCGA	DP:f:2	CB:Z:blue
-S	39	CGATCTGATCAGTCTGAGTCA	DP:f:2	CB:Z:blue
-S	40	AATGATAGCATGACTCAGACT	DP:f:2	CB:Z:blue
-S	41	GTACATGCTGTGATGTACGAA	DP:f:1	CB:Z:gray
-S	42	ATGCATTCGTACATCACAGCA	DP:f:1	CB:Z:gray
-S	43	ACGAATGCATGCATCGATCGA	DP:f:2	CB:Z:blue
-S	44	ATCGATCGATCGAAATGATAG	DP:f:2	CB:Z:blue
-S	45	CAGCATGTACGTGTCAGTCGA	DP:f:1	CB:Z:gray
-S	46	TAGCATGACTCAGACTGATCA	DP:f:2	CB:Z:blue
-S	47	ACTCGTACATGCAGTGATGTA	DP:f:1	CB:Z:blue
-S	48	GCATGCATCGATCGATCGAAA	DP:f:2	CB:Z:blue
-S	49	ATCGACTGACTCGTACATGCA	DP:f:1	CB:Z:blue
-S	50	AGTCAGTCGATCTGATCGTAG	DP:f:1	CB:Z:blue
-S	51	CATGCAGTGATGTACGAATGC	DP:f:1	CB:Z:blue
-S	52	ACATGCAGTGATGTACGAATG	DP:f:1	CB:Z:blue
-S	53	GTGTCAGTCGATCTGATCGTA	DP:f:1	CB:Z:gray
-S	54	CATCACAGCATGTACGTGTCA	DP:f:1	CB:Z:gray
-S	55	AGCATGACTCAGACTGATCAG	DP:f:2	CB:Z:blue
-S	56	CGTACATGCTGTGATGTACGA	DP:f:1	CB:Z:gray
-S	57	ACACGTACATGCTGTGATGTA	DP:f:1	CB:Z:gray
-S	58	ATTTCGATCGATCGATGCATG	DP:f:2	CB:Z:blue
-S	59	AGATCGACTGACACGTACATG	DP:f:1	CB:Z:gray
-S	60	AGTGATGTACGAATGCATGCA	DP:f:1	CB:Z:blue
-S	61	ATGTACGAATGCATGCATCGA	DP:f:2	CB:Z:blue
-S	62	CTCGTACATGCAGTGATGTAC	DP:f:1	CB:Z:blue
-S	63	GAATGCATGCATCGATCGATC	DP:f:2	CB:Z:blue
-S	64	AGATCGACTGACTCGTACATG	DP:f:1	CB:Z:blue
-S	65	CATGCATTCGTACATCACAGC	DP:f:1	CB:Z:gray
-S	66	GATGCATGCATTCGTACATCA	DP:f:2	CB:Z:blue
-S	67	GATCGACTGACTCGTACATGC	DP:f:1	CB:Z:blue
-S	68	ATTCGTACATCACTGCATGTA	DP:f:1	CB:Z:blue
-S	69	AAATGATAGCATGACTCAGAC	DP:f:2	CB:Z:blue
-S	70	GCTATCATTTCGATCGATCGA	DP:f:2	CB:Z:blue
-S	71	ATCGATGCATGCATTCGTACA	DP:f:2	CB:Z:blue
-S	72	ATGCTGTGATGTACGAATGCA	DP:f:1	CB:Z:gray
-S	73	ATCACTGCATGTACGAGTCAG	DP:f:1	CB:Z:blue
-S	74	ATCAGATCGACTGACACGTAC	DP:f:1	CB:Z:gray
-S	75	TCAGATCGACTGACACGTACA	DP:f:1	CB:Z:gray
-S	76	TCGAAATGATAGCATGACTCA	DP:f:2	CB:Z:blue
-S	77	ATCGAAATGATAGCATGACTC	DP:f:2	CB:Z:blue
-S	78	CGAAATGATAGCATGACTCAG	DP:f:2	CB:Z:blue
-S	79	TACTACGATCAGATCGACTGA	DP:f:2	CB:Z:blue
-S	80	ACAGCATGTACGTGTCAGTCG	DP:f:1	CB:Z:gray
-S	81	CATCGATCGATCGAAATGATA	DP:f:2	CB:Z:blue
-S	82	ACTGCATGTACGAGTCAGTCG	DP:f:1	CB:Z:blue
-S	83	ATACTACGATCAGATCGACTG	DP:f:2	CB:Z:blue
-S	84	TCATTTCGATCGATCGATGCA	DP:f:2	CB:Z:blue
-S	85	ATCGATCGAAATGATAGCATG	DP:f:2	CB:Z:blue
-S	86	ATCAGTCTGAGTCATGCTATC	DP:f:2	CB:Z:blue
-S	87	ATAGCATGACTCAGACTGATC	DP:f:2	CB:Z:blue
-S	88	TGCATGCATTCGTACATCACA	DP:f:1	CB:Z:gray
-S	89	CGTACATCACTGCATGTACGA	DP:f:1	CB:Z:blue
-S	90	CACTGCATGTACGAGTCAGTC	DP:f:1	CB:Z:blue
-S	91	TGCATGCATCGATCGATCGAA	DP:f:2	CB:Z:blue
-S	92	ACATCACTGCATGTACGAGTC	DP:f:1	CB:Z:blue
-S	93	ATTCGTACATCACAGCATGTA	DP:f:1	CB:Z:gray
-S	94	CGATCGAAATGATAGCATGAC	DP:f:2	CB:Z:blue
-S	95	CATGCTGTGATGTACGAATGC	DP:f:1	CB:Z:gray
-S	96	ATCATTTCGATCGATCGATGC	DP:f:2	CB:Z:blue
-S	97	ACTGACACGTACATGCTGTGA	DP:f:1	CB:Z:gray
-S	98	GCATGACTCAGACTGATCAGA	DP:f:2	CB:Z:blue
-S	99	GAGTCAGTCGATCTGATCGTA	DP:f:1	CB:Z:blue
-S	100	ATGTACGTGTCAGTCGATCTG	DP:f:1	CB:Z:gray
-S	101	TCAGTCTGAGTCATGCTATCA	DP:f:2	CB:Z:blue
-S	102	ATCACAGCATGTACGTGTCAG	DP:f:1	CB:Z:gray
-S	103	AATGCATGCATCGATCGATCG	DP:f:2	CB:Z:blue
-S	104	CTGTGATGTACGAATGCATGC	DP:f:1	CB:Z:gray
-S	105	CATCACTGCATGTACGAGTCA	DP:f:1	CB:Z:blue
-S	106	GATCAGATCGACTGACTCGTA	DP:f:1	CB:Z:blue
-S	107	ATGCTATCATTTCGATCGATC	DP:f:2	CB:Z:blue
-S	108	ACGTGTCAGTCGATCTGATCG	DP:f:1	CB:Z:gray
-S	109	ACATCACAGCATGTACGTGTC	DP:f:1	CB:Z:gray
-L	0	+	101	-	1N20M	KC:i:2
-L	40	+	0	+	1N20M	KC:i:2
-L	1	+	80	+	1N20M	KC:i:1
-L	97	-	1	+	1N20M	KC:i:1
-L	2	+	88	+	1N20M	KC:i:1
-L	2	+	60	-	1N20M	KC:i:1
-L	66	+	2	+	1N20M	KC:i:2
-L	3	+	10	-	1N20M	KC:i:1
-L	45	+	3	+	1N20M	KC:i:1
-L	4	+	56	+	1N20M	KC:i:1
-L	7	+	4	+	1N20M	KC:i:1
-L	5	+	23	-	1N20M	KC:i:1
-L	21	+	5	+	1N20M	KC:i:1
-L	6	+	84	-	1N20M	KC:i:2
-L	58	-	6	+	1N20M	KC:i:2
-L	7	+	4	+	1N20M	KC:i:1
-L	57	+	7	+	1N20M	KC:i:1
-L	8	+	66	+	1N20M	KC:i:2
-L	61	-	8	+	1N20M	KC:i:2
-L	9	+	32	-	1N20M	KC:i:1
-L	99	-	9	+	1N20M	KC:i:1
-L	10	+	3	-	1N20M	KC:i:1
-L	59	+	10	+	1N20M	KC:i:1
-L	11	+	15	-	1N20M	KC:i:1
-L	51	+	11	+	1N20M	KC:i:1
-L	12	+	95	+	1N20M	KC:i:1
-L	93	-	12	+	1N20M	KC:i:1
-L	13	+	98	-	1N20M	KC:i:2
-L	34	-	13	+	1N20M	KC:i:2
-L	39	-	14	+	1N20M	KC:i:2
-L	15	+	11	-	1N20M	KC:i:1
-L	36	+	15	+	1N20M	KC:i:1
-L	16	+	35	+	1N20M	KC:i:1
-L	89	-	16	+	1N20M	KC:i:1
-L	83	-	17	+	1N20M	KC:i:2
-L	18	+	49	-	1N20M	KC:i:1
-L	82	+	18	+	1N20M	KC:i:1
-L	19	+	94	-	1N20M	KC:i:2
-L	77	-	19	+	1N20M	KC:i:2
-L	20	+	25	+	1N20M	KC:i:2
-L	43	-	20	+	1N20M	KC:i:2
-L	21	+	5	+	1N20M	KC:i:1
-L	106	+	21	+	1N20M	KC:i:1
-L	22	+	43	-	1N20M	KC:i:2
-L	63	-	22	+	1N20M	KC:i:2
-L	23	+	5	-	1N20M	KC:i:1
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-L	24	+	60	+	1N20M	KC:i:1
-L	36	-	24	+	1N20M	KC:i:1
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-L	20	+	25	+	1N20M	KC:i:2
-L	26	+	73	-	1N20M	KC:i:1
-L	90	-	26	+	1N20M	KC:i:1
-L	27	+	33	+	1N20M	KC:i:1
-L	27	+	50	-	1N20M	KC:i:1
-L	79	+	27	+	1N20M	KC:i:2
-L	28	+	91	+	1N20M	KC:i:2
-L	103	+	28	+	1N20M	KC:i:2
-L	29	+	108	-	1N20M	KC:i:1
-L	53	-	29	+	1N20M	KC:i:1
-L	30	+	107	-	1N20M	KC:i:2
-L	70	-	30	+	1N20M	KC:i:2
-L	31	+	69	+	1N20M	KC:i:2
-L	78	+	31	+	1N20M	KC:i:2
-L	32	+	9	-	1N20M	KC:i:1
-L	106	-	32	+	1N20M	KC:i:1
-L	33	+	53	-	1N20M	KC:i:1
-L	27	+	33	+	1N20M	KC:i:1
-L	34	+	39	-	1N20M	KC:i:2
-L	13	-	34	+	1N20M	KC:i:2
-L	35	+	68	-	1N20M	KC:i:1
-L	16	+	35	+	1N20M	KC:i:1
-L	36	+	15	+	1N20M	KC:i:1
-L	24	-	36	+	1N20M	KC:i:1
-L	37	+	74	+	1N20M	KC:i:1
-L	108	-	37	+	1N20M	KC:i:1
-L	38	+	85	-	1N20M	KC:i:2
-L	94	-	38	+	1N20M	KC:i:2
-L	39	+	34	-	1N20M	KC:i:2
-L	14	-	39	+	1N20M	KC:i:2
-L	40	+	0	+	1N20M	KC:i:2
-L	69	+	40	+	1N20M	KC:i:2
-L	41	+	93	-	1N20M	KC:i:1
-L	56	+	41	+	1N20M	KC:i:1
-L	42	+	72	-	1N20M	KC:i:1
-L	65	+	42	+	1N20M	KC:i:1
-L	43	+	22	-	1N20M	KC:i:2
-L	20	-	43	+	1N20M	KC:i:2
-L	44	+	70	-	1N20M	KC:i:2
-L	81	+	44	+	1N20M	KC:i:2
-L	45	+	3	+	1N20M	KC:i:1
-L	80	+	45	+	1N20M	KC:i:1
-L	46	+	55	+	1N20M	KC:i:2
-L	87	+	46	+	1N20M	KC:i:2
-L	47	+	62	+	1N20M	KC:i:1
-L	92	-	47	+	1N20M	KC:i:1
-L	48	+	58	-	1N20M	KC:i:2
-L	91	+	48	+	1N20M	KC:i:2
-L	49	+	18	-	1N20M	KC:i:1
-L	67	+	49	+	1N20M	KC:i:1
-L	50	+	27	-	1N20M	KC:i:1
-L	99	+	50	+	1N20M	KC:i:1
-L	51	+	11	+	1N20M	KC:i:1
-L	52	+	51	+	1N20M	KC:i:1
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-L	68	-	52	+	1N20M	KC:i:1
-L	53	+	33	-	1N20M	KC:i:1
-L	29	-	53	+	1N20M	KC:i:1
-L	54	+	102	+	1N20M	KC:i:1
-L	109	+	54	+	1N20M	KC:i:1
-L	55	+	98	+	1N20M	KC:i:2
-L	46	+	55	+	1N20M	KC:i:2
-L	56	+	41	+	1N20M	KC:i:1
-L	4	+	56	+	1N20M	KC:i:1
-L	57	+	7	+	1N20M	KC:i:1
-L	109	-	57	+	1N20M	KC:i:1
-L	58	+	48	-	1N20M	KC:i:2
-L	6	-	58	+	1N20M	KC:i:2
-L	59	+	10	+	1N20M	KC:i:1
-L	100	-	59	+	1N20M	KC:i:1
-L	60	+	2	-	1N20M	KC:i:1
-L	24	+	60	+	1N20M	KC:i:1
-L	61	+	71	-	1N20M	KC:i:2
-L	8	-	61	+	1N20M	KC:i:2
-L	62	+	89	-	1N20M	KC:i:1
-L	47	+	62	+	1N20M	KC:i:1
-L	63	+	103	+	1N20M	KC:i:2
-L	22	-	63	+	1N20M	KC:i:2
-L	64	+	67	+	1N20M	KC:i:1
-L	23	-	64	+	1N20M	KC:i:1
-L	65	+	42	+	1N20M	KC:i:1
-L	104	-	65	+	1N20M	KC:i:1
-L	66	+	2	+	1N20M	KC:i:2
-L	8	+	66	+	1N20M	KC:i:2
-L	67	+	49	+	1N20M	KC:i:1
-L	64	+	67	+	1N20M	KC:i:1
-L	68	+	35	-	1N20M	KC:i:1
-L	52	-	68	+	1N20M	KC:i:1
-L	69	+	40	+	1N20M	KC:i:2
-L	31	+	69	+	1N20M	KC:i:2
-L	70	+	44	-	1N20M	KC:i:2
-L	30	-	70	+	1N20M	KC:i:2
-L	71	+	61	-	1N20M	KC:i:2
-L	25	+	71	+	1N20M	KC:i:2
-L	72	+	42	-	1N20M	KC:i:1
-L	95	+	72	+	1N20M	KC:i:1
-L	73	+	26	-	1N20M	KC:i:1
-L	105	+	73	+	1N20M	KC:i:1
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-L	74	+	75	+	1N20M	KC:i:1
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-L	77	+	76	+	1N20M	KC:i:2
-L	19	-	77	+	1N20M	KC:i:2
-L	78	+	31	+	1N20M	KC:i:2
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-L	79	+	27	+	1N20M	KC:i:2
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-L	17	-	83	+	1N20M	KC:i:2
-L	84	+	6	-	1N20M	KC:i:2
-L	96	+	84	+	1N20M	KC:i:2
-L	85	+	38	-	1N20M	KC:i:2
-L	107	-	85	+	1N20M	KC:i:2
-L	86	+	101	+	1N20M	KC:i:2
-L	87	-	86	+	1N20M	KC:i:2
-L	87	+	46	+	1N20M	KC:i:2
-L	86	-	87	+	1N20M	KC:i:2
-L	88	+	104	-	1N20M	KC:i:1
-L	2	+	88	+	1N20M	KC:i:1
-L	89	+	62	-	1N20M	KC:i:1
-L	16	-	89	+	1N20M	KC:i:1
-L	90	+	82	+	1N20M	KC:i:1
-L	26	-	90	+	1N20M	KC:i:1
-L	91	+	48	+	1N20M	KC:i:2
-L	28	+	91	+	1N20M	KC:i:2
-L	92	+	105	+	1N20M	KC:i:1
-L	47	-	92	+	1N20M	KC:i:1
-L	93	+	41	-	1N20M	KC:i:1
-L	12	-	93	+	1N20M	KC:i:1
-L	94	+	19	-	1N20M	KC:i:2
-L	38	-	94	+	1N20M	KC:i:2
-L	95	+	72	+	1N20M	KC:i:1
-L	12	+	95	+	1N20M	KC:i:1
-L	96	+	84	+	1N20M	KC:i:2
-L	81	-	96	+	1N20M	KC:i:2
-L	97	+	102	-	1N20M	KC:i:1
-L	1	-	97	+	1N20M	KC:i:1
-L	98	+	13	-	1N20M	KC:i:2
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-L	9	-	99	+	1N20M	KC:i:1
-L	100	+	75	-	1N20M	KC:i:1
-L	59	-	100	+	1N20M	KC:i:1
-L	101	+	0	-	1N20M	KC:i:2
-L	86	+	101	+	1N20M	KC:i:2
-L	102	+	97	-	1N20M	KC:i:1
-L	54	+	102	+	1N20M	KC:i:1
-L	103	+	28	+	1N20M	KC:i:2
-L	63	+	103	+	1N20M	KC:i:2
-L	104	+	88	-	1N20M	KC:i:1
-L	65	-	104	+	1N20M	KC:i:1
-L	105	+	73	+	1N20M	KC:i:1
-L	92	+	105	+	1N20M	KC:i:1
-L	106	+	21	+	1N20M	KC:i:1
-L	32	-	106	+	1N20M	KC:i:1
-L	107	+	30	-	1N20M	KC:i:2
-L	85	-	107	+	1N20M	KC:i:2
-L	108	+	29	-	1N20M	KC:i:1
-L	37	-	108	+	1N20M	KC:i:1
-L	109	+	54	+	1N20M	KC:i:1
-L	57	-	109	+	1N20M	KC:i:1