cccc cccp cchp ccnc ccnp ccoc ccpn ccpp chch chcp chnc chno choc choh chon choo chop chpp cnco cncp cnoh coch coco cocp cohn coho con- conc conn cono cooh coon coop coph copo copp hccc hcch hcpc hhhh hhpc hoch hocn hohn hoho hono hoon hoop hopo hopp hpcc nccc nccn nccp nchc ncnc ncoc ncpc nhcc nhnn nhon nnnn noch noco nohn noho non- nonn nono noo- noon nooo noop noph npcc nppc occc occn ocon ocpp ohcc ohho ohno ohoh onc- onco onno onon ooho oooh oooo opo- opon oppo pccc pchp pcpn pcpp phcc phno phoh phon phoo pnon pnpo pnpp poch poco ponc pono ponp pooh poon poop pop- popc popo popp ppcc pppn pppo pppp