Images folder should looks like that:
images
├── trait_0_background_100
│ └── rarity_100.png
├── trait_1_pers_100
│ └── rarity_100.png
├── trait_2_cep_50
│ └── cep1_50.png
├── trait_3_sergi_50
│ ├── sergi0_20.png
│ ├── sergi1_10.png
│ ├── sergi2_80.png
│ └── sergi3_40.png
└── trait_4_shram_50
├── shram1_20.png
└── shram2_30.png
5 directories, 9 files
last digits is always define rarity.