Level 1. TEA, TAX, TALE, LATE, EXALT, AXLE
Level 2. PALE, PEAL, PLEA, MEAL, LEAP, MALE, LAMP, AMPLE
Level 3. URGE, REEF, FREE, REFUGE
Level 4. HAVE, HEAVE, BEHAVE
Level 5. SUN, USE, DUE, SEND, DUNE, SUDDEN, SUE
Level 6. PEEL, MEET, TEMP, MELT, TEMPLE, PELT
Level 7. OVEN, ENVY, CONE, ONCE, CONVEY, ENVOY
Level 8. ROTE, TORE, PORT, PORE, ROPE, TROPE, EXPORT, POET
