O1V4E1R1L1A1B3O1U1R1E1D2
18 points
OVERLABOURED 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]