cccc cccl cccp cccu cclc ccoc ccpl ccpp cctc cctl cctt ccuc ccup ccut cloo clop clot clou cloy clpp cltc clut cly- coco cocp coct cocu col- coll colo colp colt colu coly cool coop coot copo copp copt copy cotc coto cott cotu coty coul coup cout couy coyl coyo coyt cpcu cplc cptp ctcp ctol ctot ctpo ctpp cucc culc cull culo culp cult cupl cupo cupp cut- cutc cuto cutt cuy- cuyl cuyo cuyp cyc- cycc cycl cyl- cylc cyll cypc cyt- cyto cyul cyy- cyyc lccc lcpc lcpl lctl lcto llcc lllc llll lloc lloo locc loco locu loll lolo loly looc lool loop loot lopp lopu lotl loto lott loul loup lout louu lppl ltcc lttc ltuc lucy lull lulu lupo lupu luup luyt lyc- lyco lyly lyo- lyot lyto lytt occc occt oclc ocpp oct- octo octy ocul olcc ollo olly olot olpc oltu oolo oooo ootp ooty opo- oppo oppy opto otcl oto- otoo otoy otpp otto ottu oucc oulu out- outo outy ouu- oyly oyou pccc pccl pcll pclo pcpp plcc ploc ploo plop plot plou ploy plpp pltt plup plyt poco poll polo polt polu poly pool poop poot pop- popc popo popp popt popy potc poto pott potu poty poul poup pout pouy poyo ppcc pplo pppo pppp pptt ptcc ptcl ptol ptop pttc pull pulo pulp pult pulu puly puoy pupl pupu pupy put- puto putt putu puuc puy- puyo puyt pyl- pyll pyo- pyot pypy pytt tccc tccu tcpo tcpy tctc tcul tlco to-y toco tol- toll tolo tolt tolu toly tool toot top- topo topp topt topu totc toto tott toty toul toup tout toyl toyo toyt tpcp tpol tppp tptp tput tpyo ttcp ttop ttoy tttt ttul ttyl tucc tuco tull tulo tulp tulu tuly tupo tupu tupy tutl tuto tutt tutu tuty tuuo tuyl tyco tyl- tyll tylo typ- typo typp typy tyto tytt tyty tyup uccp ucut ulcc ulco ullo ully ulo- uloc ulto ultt ulul uocc uolc uplo uppc uppp uppu uppy uptl upto upup utoy utto uttu uucp uulu uuoc uuuu yccc yctc yoll yolo yolp yoly yool yoop yoot yopo yopy yott youl youp yout yoyo ypcc yput yulo yulu yuto yutu yuty yuyu yyyy