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Level 18 - LABNADHL
The answer to this puzzle is:
Words: HADAL, HALAL, ALAND, BANDA, DHAL, NALA, BAAL, DAHL, ALBA, NADA, ALAN, BLAH, LAND, HAD, DAB, NAB, DAH, BAL, AAH, BAH, AHA, NAH, ALL
Bonus words:
HADAL, HALAL, ALAND, BANDA, DHAL, NALA, BAAL, DAHL, ALBA, NADA, ALAN, BLAH, LAND, HAD, DAB, NAB, DAH, BAL, AAH, BAH, AHA, NAH, ALL