c-cor c-dot c-p-c c-pop ccccc co-co co-op cocc- cocco cocto cocur codco codo codru coopt coord coppo copr- copro copto copur coput coro- corod corop corot corto cott- cotto cottu couco courd court couru couto coutu cpctc croco crodo crood croop croot cropc cropo crott croud croup crout crudo cruor cudot cuoco cupr- cupro curro curto curup cutco cutcu cutro cutto cutup d-cru d-dot d-rod ddddd do-do dodoo dodro doodo doout dordt dorot dorud dotoo dotto doupt douro drood droop drop- dropo dropt drott droup drout dtour ducor duddo dudou duduc duroc durtu occur octo- octor oddup oddur odour odudu oduro ooooo oopod opdoc opodo opto- optot optto orcop ordoc ordro orduc oroco orodo orout ortoo oruro orutu ototo otour otpor ottur ouoro outdo outro outto pctct po-po pocop podo- podor poopo poort popco popop poppo popup porco porcu poro- porro porto portu porur potco potoc potoo potop potor potro potto pottu prodd proor proot prop- propp propr propt prot- proto proud prout prtor ptprc ptprd ptpro ptprr ptprt ptpru pudor pudur puppo puro- putco putor putt- putto puttu putuo putup r-co- ro-ro rocco rocor rocou rodoc rodor roodu roto- rotor rotot rotto routt rprop rptor ruutu t-pop t-top to-do tocco toco- tocut todor toord topcu topo- topor topot toppo topto topup tordu torpo torro torto tortu torud toto- totoo totop totup tourd touro tprot troco trood troop trop- tropo trott troup trout truco trudo trupt truro ttttt tuctu tudor tudou tudur tuotu tupou turco turoc turot turro turtu turup turut tutor tutto tuuru u-pop up-do upcot upcut updoc upput uptop urour urucu urutu utro- utrop utror uttur uturu ututo uuuuu