-up c-- ccc cck cco ccp ccr ccs ccu ckc cko cks cky co- coc cok coo cop cor cos cou coy cpc cpk cpo cpp cpr cps cpu crc crk cro crp crr crs cru cry csc csk cso csp csr css csu csy cuc cuk cuo cup cur cus cuu cuy cyc cyk cyo cyp cyr cys kcc kck kcp kcr kcs kcu kkc kkk kkp kkr kks kku kky koc kok koo kop kor kos kou koy kpc kpk kpo kpp kpr kps kpu krc krk kro krp krr krs kru kry ksc ksk kso ksp ksr kss ksu kuc kuk kup kur kus kuu kuy kyc kyo kyp kyr kys kyu oc- occ ock oco ocp ocr ocs ocu okc okk oko okp okr oks oku oo- ooc ook ooo oop oor oos op- opc opk opo opp opr ops opy or- orc ork oro orp orr ors oru ory os- osc osk oso osp osr oss osu ou- ouc ouk ouo oup our ous oyo oys p-p pcc pck pco pcp pcr pcs pcu pkc pko pkp pkr pks pku pky poc pok poo pop por pos pou poy ppc ppk ppo ppp ppr pps ppu prc prk pro prp prr prs pru pry ps- psc psk pso psp psr pss psu psy puc puk pup pur pus puu puy py- pyc pyk pyo pyr pys pyu rcc rco rcp rcr rcs rcu rkc rkk rko rkp rks rku rky roc rok roo rop ror ros rou roy rpc rpk rpo rpp rpr rps rpu rrc rrk rrp rrr rrs rru rsc rsk rso rsp rsr rss rsu ruc ruk ruo rup rur rus ruu ruy ry- ryc ryk ryo ryr rys ryu ryy scc sck sco scp scr scs scu sk- skc skk sko skp skr sks sku sky soc sok soo sop sor sos sou soy spc spk spo spp spr sps spu spy sr- src srk sro srp srr srs sry ss- ssc ssk sso ssp ssr sss ssu suc suk suo sup sur sus suu suy sy- syc syk syp syr sys syu ucc uck uco ucp ucr ucs ucu ukc ukk ukp ukr uku uoc uok uoo uop uor uos up- upc upk upo upp upr ups upu ur- urc urk uro urp urr urs uru ury usc usk uso usp usr uss usu uuc uur uus uuu uyc uyo uys uyu ycc yco ycp ycs ycu ycy ykk yoc yok yoo yop yor yos you yoy ypo yps ypu yrc yro yrp yrs yru ysc ysk yso ysp ysr yss ysu ysy yuk yuo yup yur yus yuu yuy yyc yys yyu yyy