Level 1. CUE, LURE, CURE, CRUEL, CURL
Level 2. LACK, LANK, CALK, CLAN, CLANK, CAN
Level 3. SOW, DIM, MID, WISDOM, SWIM
Level 4. TOE, JOB, BET, JET, OBJECT, JOT
Level 5. TEN, TIE, NET, NINE, INTENT, INN
Level 6. SIR, VIA, AIR, OAR, SOAR, VISA, SAVIOR
Level 7. SET, STEM, MESS, SYSTEM, YET
Level 8. TAD, SAD, JUT, JUST, DUST, ADJUST
