O1V4E1R1L1A1B3O1U1R1S1
16 points
OVERLABOURS is validvalid
OVERLABOUR, to labour excessively [v]
OVERLABOUR, (archaic) to labour excessively, also OVERLABOR [v]
OVERLABOUR, to labour excessively [v]
OVERLABOUR, (archaic) to labour excessively, also OVERLABOR [v]