cccc cccp cchp ccoc ccpp cctc cctt chch chcp choc choh choo chop chpp chto chtt coch coco cocp coct coho cooh coop coot coph copo copp copt cotc coth coto cott cptp ctcp ctot ctpo ctpp hccc hcch hcpc hhhh hhpc hhtp hoch hoho hoop hoot hopo hopp hopt hoth hoto hotp hott hpcc hpot hpto htcc htcp htoh htop htpc htpp http occc occt ocht ocpp oct- octo ohcc ohho ohoh ohto ooho oooh oooo ootp opo- oppo opto otho oto- otoh otoo otpp otto pccc pchp pcpp phcc phht phoh phoo phot poch poco pooh poop poot pop- popc popo popp popt potc poth poto pott ppcc pppo pppp pptt ptcc ptop pttc tccc tch- tchh tcho tchp tcpo tctc thch thhp thoo thot thpp toch toco toho tooh toot top- toph topo topp topt totc toth toto tott tpcp tppp tptp ttcp ttop tttt