Comparison of the F1-F2 Formant charts for all Wells lexical sets between accents.
The compiled list of lexical sets used can be found here.
Sets are grouped as follows, in accordance with RP phonology:
| Group | Placements | Sets |
|---|---|---|
| A | Close to Close-Mid | happY, FLEECE, KIT, DRESS, FOOT, GOOSE |
| B | Mid to Open-Mid | lettER, commA, NURSE, STRUT, THOUGHT, NORTH, FORCE |
| C | Near-Open to Open | TRAP, BATH, PALM, START, LOT, CLOTH |
This is done solely for convenience in graphing.