cccc cccp ccnc ccnp ccnr ccny ccoc ccpn ccpp ccpr ccrc ccrp cnco cncp cnnz cnrc cnrr coco cocp con- conc conn cono cony coon coop copo copp copr copy cor- corc corn coro corp corr cory coyn coyo coyr cozy cozz crcc crcr crcz croc cron croo crop cror croy croz crpc cry- cryn cryo cryz cyc- cycc cyn- cyno cyon cypc cyy- cyyc cyyn czon czyz nccc nccn nccp nccr ncnc ncoc ncor ncpc ncrc ncrp nnnn nnpr noco non- nonn nono noo- noon nooo noop noor nor- norc norn noro norr nory noyo noyz npcc nppc nroc nron nrpc nrpn nrrc nycc nyco nycy nyny nyon nypc nyro nzcc nzpc nzpp occc occn ocon ocpp ocro ocrr onc- onco onno onon onor onoy onoz onzo onzy oocr oooo oory oozy opo- opon opor oppo oppy opry orco ornc orno orny oro- oron oror oroy oroz orpc orro orry orzo oyon ozon ozzy pccc pcpn pcpp pcrc pnon pnpo pnpp pnro poco ponc pono ponp pony poon poop poor pop- popc popo popp popy porc porn poro porr pory porz poyn poyo poyr pozo ppcc pppn pppo pppp pprc prcc prcp prnp pro- proc pron proo prop proz pyn- pyo- pyon pypy pyr- pyro pyry pyzy rccc rcnr rcon rcpo rcyc rnco rncp rocc roco ronc rono rony roon roop roor rooz ropo ropy rorc roro rory royn rozz rpon rppn rpyc rrrr rynn ryon yccc ynon yono yoon yoop yooz yopo yopy yorn yoro yory yoyn yoyo yozo ypcc yron yryn yyyy z-ro zoco zon- zony zoo- zoon zoop zopy zorc zorn zoro zory zozo zypp zzzz