Level 1. ACE, ACHE, CACHE, EACH
Level 2. VEER, SERVE, VERSE, EVER
Level 3. NUT, TUNE, UNIT, UNITE, NET
Level 4. HOT, HOOT, BOOT, BOOTH, BOTH
Level 5. BYE, BAY, BABY, BABE, ABBEY, AYE
Level 6. SHUT, SHOT, SOUTH, SHOUT, HOST
Level 7. SIRE, RISE, REIN, SIREN, RINSE
Level 8. BEAD, LEAD, ABLE, BALD, BALE, BLADE, DEAL
