Level 1. SKI, SKY, RISK, RISKY, SIR
Level 2. BLUR, BRAT, BRUT, BLURT, ULTRA, BRUTAL, TUBA
Level 3. PHARAOH, HARP
Level 4. CALM, CLAM, CLAIM, ACCLAIM, MAIL
Level 5. NIECE, SCENE, SCIENCE, SINCE
Level 6. BABY, BONY, LOAN, ONLY, LOBBY, NOBLY, BABYLON
Level 7. CELT, CLUE, CULT, ELECT, CUTLET, LETTUCE, CUTE
Level 8. CEDE, CITE, DECEIT, EXCITE, EXITED, EXCITED, TEED