D2I1S1C3O1L1O1U1R1A1T1I1O1N1S1
18 points
DISCOLOURATIONS is validvalid
DISCOLOURATION, discoloration
DISCOLOURATION, the act of discolouring, also DISCOLORATION
DISCOLOURATION, discoloration
DISCOLOURATION, the act of discolouring, also DISCOLORATION