cccc cccf cccp ccfc ccff ccnc ccnf ccnp ccnr ccoc ccpn ccpp ccpr ccrc ccrf ccrp cfcf cfcn cfco cffr cfnr cfor cfpo cfpr cfrn cfrp ckck ckco ckfr cknc ckoc ckoo ckor ckpc ckpr ckrc cnco cncp cnrc cnrr cock coco cocp cofc coff cok- coko con- conc conf conk conn cono coof cook coon coop copo copp copr cor- corc corf cork corn coro corp corr cpff crcc crcr crfc crkc crkp croc crok cron croo crop cror crpc f--k fccf fccp ffcc ffff ffrr fock foco fofo fono foof fook foon fopp for- fork forn foro forr fp-c fpcc fprf frcc frcn frcp frfc fron frop kccc kcck kccr kcfc kcfn kcfo kcfp kckc kckf kckk kckn kcko kckr kcno kcnp kcnr kcof kcon kcor kcpc kcpn kcpo kcpr kcrc kcrn kcro kcrp kcrr kfcf kfco kfcr kfff kffk kffn kfnc kfnf kfnk kfnn kfno kfok kfon kfoo kfor kfpr kfrc kfrn kfro kfrp kfrr kkck kkcn kkco kkcr kkfn kkfr kkkk kknn kkno kkon kkoo kkor kkpc kkpk kkpn kkrc kkrf kkrk kkrn kkro kkrr knck kncn knco kncr knfo knfr knkk knnk knnr knoc knok knon knop knor knpc knpr knrk knro kocf kock kocn kocp kofc koff kofk kofo kofp kokc kokf kokk kokn koko kokp kokr konc konk kono konp kooc kook koon kooo koop koor kopf kopn kopp kopr korc korf kork korn koro korr kpcc kpcr kpfc kpfk kpfn kpfr kpkk kpkr kpnc kpno kpnp kpoc kpof kpok kpoo kpop kppc kppk kppo kppp kppr kprc kprf kprk kprn kpro kprp kprr krcc krcn krco krfc krff krfn krfo krfp krkc krkk krkn krko krkr krnk krnn krno krnp kroc krof krok kroo krop kror krpr krrc krrf krrk krrn krro krrr nccc nccf nccn nccp nccr ncfc ncnc ncoc ncor ncpc ncrc ncrp nfff nfon nkfc nkok nkor nkrf nnnn nnpr nock noco noko non- nonn nono noo- nook noon nooo noop noor nor- norc norf nork norn noro norr npcc nppc nrfc nroc nron nrpc nrpn nrrc occc occn ocfp ocon ocpp ocro ocrr ofcr off- offc offo offr ofno ofor okko okno okok okon okor okpo okro onc- oncf onco onkp onno onon onor oocr ooff oooo opo- opon opor oppo orco orff orko ornc orno oro- orof orok oron oror orpc orro pccc pcfc pcpn pcpp pcrc pcrf pfff pffr pfkp pnkp pnon pnpo pnpp pnro pock poco poff poko ponc ponk pono ponp poof pook poon poop poor pop- popc popo popp porc pork porn poro porr ppcc pppn pppo pppp pprc pprf prcc prcf prcp prfc prnp pro- proc prof pron proo prop rccc rcfc rcnr rcon rcpo rffc rkkf rnco rncp rocc rock roco rofc roff rofo rokk roko rokr ronc ronk rono roof rook roon roop roor ropo rorc rork roro rpfc rpof rpon rppn rrfc rrrr