T1U1B3E1W4O1R1M3
15 points
TUBEWORM is validvalid
a marine worm that builds and lives in a tube [n TUBEWORMS]
a marine worm that builds and lives in a tube [n -S]
a marine worm that builds and lives in a tube [n TUBEWORMS]
a marine worm that builds and lives in a tube [n -S]