Level 1. PIE, PER, RIPE, RICE, PRICE, ICE
Level 2. LANE, LEAN, CANE, CLEAN, LACE
Level 3. EAR, RAGE, GEAR, AGREE, AGE
Level 4. RENT, TEND, REND, DENT, TREND, NERD
Level 5. TIP, TOP, COP, PIT, TOPIC, OPTIC, POT
Level 6. TIN, SIT, GIN, SIN, SIGN, SING, STING, TIS
Level 7. VOTE, VEST, STOVE, VETO
Level 8. WOE, OWL, HOW, OLE, HOWL, HOLE, WHOLE, WHO
