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Level 15 - HLBALDAN
The answer to this puzzle is:
Words: ALAND, HALAL, BANDA, HADAL, DAHL, ALBA, BAAL, DHAL, NALA, NADA, BLAH, LAND, ALAN, HAD, AHA, NAH, BAH, AAH, AND, DAB, NAB, DAH, BAL
Bonus words:
ALAND, HALAL, BANDA, HADAL, DAHL, ALBA, BAAL, DHAL, NALA, NADA, BLAH, LAND, ALAN, HAD, AHA, NAH, BAH, AAH, AND, DAB, NAB, DAH, BAL