Level 1. FOR, FAR, FAVOR, OAR
Level 2. HAT, BATH, BAIT, HABIT, BAT
Level 3. SHE, SET, THESE, SHEET, SEE
Level 4. TEE, PET, TREE, PEER, PETER, PER
Level 5. COY, CON, CORN, CORNY, CRY
Level 6. CUT, CULT, COLT, CLOT, CLOUT, LOT
Level 7. RAM, ARM, MAN, ROMAN, MANOR, NOR
Level 8. ANT, TANK, HANK, THANK, THAN