D2U1C3K5B3O1A1R1D2S1
20 points
DUCKBOARDS is validvalid
DUCKBOARD, [n]
DUCKBOARD, a board with slats nailed across it to help passage across wet ground [n]
DUCKBOARD, [n]
DUCKBOARD, a board with slats nailed across it to help passage across wet ground [n]