cccc cccl cccp cccv cchl cchp cclc cclv ccoc ccpl ccpp ccvo chch chcp chlc chlp choc choh chol choo chop chov chpp chvo cloo clop clpp coch coco cocp coho col- coll colo colp cooh cool coop coph copo copp covo cphl cplc cpvc cpvl cvcc hccc hcch hcpc hhcl hhhh hhpc hoch hohl hoho hol- holc holh holl holo holp hool hoop hopo hopp hpcc hvcc lccc lchc lcpc lcpl lcvp lhhh llcc lllc llll lloc lloo lo-v locc loch loco loho loll lolo looc lool loop lopp lovo lppl lvcc lvov occc oclc ocpp ohcc ohho ohoh olcc ollo olov olpc olph ooho oolo oooh oooo opo- oppo ovo- ovol ovoo ovpp pccc pccl pchp pcll pclo pcpp phcc phlo phoh phoo plcc plch ploc ploh ploo plop plov plpp poch poco pohl poll polo pooh pool poop pop- popc popo popp povl povo ppcc pplo pppo pppp pvco pvlv vhhh vlcc vloc voho volc voll volo volp vooc vool vplp vvvv