Level 1. DAY, LAB, BALD, LADY, LAD
Level 2. VIA, VAIN, AVIAN, VAN
Level 3. LAW, FLAW, AWFUL, FLU
Level 4. SEE, EVE, SEEN, SEVEN, EVEN
Level 5. HUT, TUB, BUM, BUT, THUMB, HUM
Level 6. LEG, AGE, GALE, BALE, BAGEL, ABLE
Level 7. PIE, WIPE, RIPE, IRE, WIPER, PEW, REP
Level 8. ARM, RAM, ASK, MARK, MASK, MARKS, SARK