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Level 15 - UALLAEVB
The answer to this puzzle is:
Words: BULLAE, ALULAE, UVEAL, ALULA, BULLA, LEAL, BLAE, ALAE, LEVA, BAAL, BEAU, LAVA, LAVE, VEAL, ALBA, LUBE, BALE, VELA, BAL, LUV, LEA, AVE
Bonus words:
BULLAE, ALULAE, UVEAL, ALULA, BULLA, LEAL, BLAE, ALAE, LEVA, BAAL, BEAU, LAVA, LAVE, VEAL, ALBA, LUBE, BALE, VELA, BAL, LUV, LEA, AVE