Level 1. TREE, GREET, REGRET
Level 2. BAIT, BRAT, RABBIT, BARB
Level 3. DARN, ROAN, ADORN, JORDAN, ROAD
Level 4. PART, PORT, RAPT, ROAR, PARROT, TRAP
Level 5. SITE, SUIT, ISSUE, SUITE, TISSUE, SUET
Level 6. MIRE, PEER, PRIM, RIME, RIPE, PRIME, EMPIRE, MERE
Level 7. CELT, LEST, ELECT, SLEET, STEEL, SELECT, SECT
Level 8. TERN, TINE, TIRE, ENTER, INERT, INTER, ENTIRE, TREE
