-ic c-- ccc cci cck cco ccp ccr ccs ci- cic cii cik cio cip cir cis ckc cki cko cks cky co- coc coi cok coo cop cor cos coy cpc cpi cpk cpo cpp cpr cps crc cri crk cro crp crr crs cry csc csi csk cso csp csr css csy cyc cyk cyo cyp cyr cys icc ici ick ico icp icr ics icy iic iii iio iip iir iis ikc iki ikk iko ikr iks io- ioc ioi ioo iop ior ios ipc ipi ipo ipp ipr ips ipy ir- irc iri irk iro irp irr irs iry is- isc isi isk iso isp isr iss isy iyc iyo iyr iys iyy kcc kci kck kcp kcr kcs kic kii kik kio kip kir kis kkc kki kkk kkp kkr kks kky koc koi kok koo kop kor kos koy kpc kpi kpk kpo kpp kpr kps krc kri krk kro krp krr krs kry ksc ksi ksk kso ksp ksr kss kyc kyo kyp kyr kys o-i oc- occ oci ock oco ocp ocr ocs oic oii oik oio oip oir ois okc oki okk oko okp okr oks oo- ooc ooi ook ooo oop oor oos op- opc opi opk opo opp opr ops opy or- orc ori ork oro orp orr ors ory os- osc osi osk oso osp osr oss oyi oyo oys p-p pcc pci pck pco pcp pcr pcs pic pii pik pio pip pir pis pkc pki pko pkp pkr pks pky poc poi pok poo pop por pos poy ppc ppi ppk ppo ppp ppr pps prc pri prk pro prp prr prs pry ps- psc psi psk pso psp psr pss psy py- pyc pyk pyo pyr pys rcc rci rco rcp rcr rcs ric rii rik rio rip rir ris riy rkc rkk rko rkp rks rky roc roi rok roo rop ror ros roy rpc rpi rpk rpo rpp rpr rps rrc rri rrk rrp rrr rrs rsc rsi rsk rso rsp rsr rss ry- ryc ryk ryo ryr rys ryy scc sci sck sco scp scr scs sic sii sik sio sip sir sis sk- skc ski skk sko skp skr sks sky soc soi sok soo sop sor sos soy spc spi spk spo spp spr sps spy sr- src sri srk sro srp srr srs sry ss- ssc ssi ssk sso ssp ssr sss sy- syc syi syk syp syr sys ycc yci yco ycp ycs ycy yii yio yip yir yis yki ykk yoc yoi yok yoo yop yor yos yoy ypo yps yrc yro yrp yrs ysc ysi ysk yso ysp ysr yss ysy yyc yys yyy