cocco- cococo cocolo cocool collo- collop collor collup coloop color- colour colpo- coocoo coodoo coolor coopup copro- copull corolu corour corrop corrup coruco coruro coulor coulro coulur coupru coupul courol courp- courr- crocco cropup crudup cruro- culdo- cupolo cuppul cupro- cupulo curlup curour curror cururo d-loop dododo dollop dollup dololo dolool doloop dolour dopplr dorood doropo dororo doudou doulou dourou droplr dulcop dulcor duldul duloup dulpod dululu duplo- lloro lo-pro lodurr lollop loloru looloo loopco loplop loulou lourlo lrpprc lurulu occour oculo- oldpro olluco oooooo oordoo opdorp ordoru ordrup orrour oudorp ourold poduru polloc polpol poluru poodur poopoo pop-up popduo popopo poporo poppop populo poupou pppppp procol procop procor propup propur prucol pucol pucuro pullup pullur purloo purpur r-loop rococo rocolo rodlo rolduc rollup roucou rudrur ruocco ruurlo udullu ulloor ulluco ullucu upcurl uppoor upprop uproll uropod urucup uruppu