DISCOLOURING

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cigs cion clod clog clon cods cogs coil coin coir cold cols coni cons cool coon coos cord corn cors cris crud crus cuds curd curl curn curs digs ding dino dins diol dirl disc docs dogs dols dong dons door dors dour drug duci dugs dung duns duos durn duro gids gild gins gird girl girn giro gnus gods gold good goon goos grid grin guid guls guns icon idol iglu inro ions irid iris iron lido lids ling lino lins lion liri loci loco logo logs loid loin long loon loos lord lorn loud lour lugs lung nidi nils nisi nodi nods nogs noil noir nolo nori nous nurd nurl odic odor oils olds olio onos onus orcs ordo ouds ours rids rigs rind ring rins rocs rods roil rood rugs ruin rung runs scud sign sild silo sing slid slog slug slur snog snug soil sold soli solo song soon sord sori sorn soul sour sung surd udon udos unci unco undo urds uric urns