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Level 15 - IUEAQLT
The answer to this puzzle is:
Words: LIQUATE, QUALE, QUATE, UTILE, LUTEA, TELIA, TELA, QUAI, TALI, LUTE, LITU, LITE, ALIT, LATU, LATI, LIEU, ETUI, AIL, TEL, ALE, LIT, TIL, TIE, LET, ALT, ATE, LEA, TEA, LAT, ETA, TAU, LEI
Bonus words:
LIQUATE, QUALE, QUATE, UTILE, LUTEA, TELIA, TELA, QUAI, TALI, LUTE, LITU, LITE, ALIT, LATU, LATI, LIEU, ETUI, AIL, TEL, ALE, LIT, TIL, TIE, LET, ALT, ATE, LEA, TEA, LAT, ETA, TAU, LEI