-ic c-- ccc cci cck cco ccr ccs cct ci- cic cii cik cio cir cis cit ckc cki cko cks ckt cky co- coc coi cok coo cor cos cot coy crc cri crk cro crr crs crt cry csc csi csk cso csr css cst csy ctc cti ctk cto ctr cts ctt cty cyc cyk cyo cyr cys cyt icc ici ick ico icr ics ict icy iic iii iio iir iis iit ikc iki ikk iko ikr iks ikt io- ioc ioi ioo ior ios iot ir- irc iri irk iro irr irs irt iry is- isc isi isk iso isr iss ist isy itc iti itk ito its itt ity iyc iyo iyr iys iyt iyy k-t kcc kci kck kcr kcs kct kic kii kik kio kir kis kit kkc kki kkk kkr kks kkt kky koc koi kok koo kor kos kot koy krc kri krk kro krr krs krt kry ksc ksi ksk kso ksr kss kst ktc ktk kto ktr kts ktt kyc kyo kyr kys kyt o-i oc- occ oci ock oco ocr ocs oct oic oii oik oio oir ois oit okc oki okk oko okr oks oo- ooc ooi ook ooo oor oos oot or- orc ori ork oro orr ors ort ory os- osc osi osk oso osr oss ost ot- otc oti otk oto otr ots ott oyi oyo oys rcc rci rco rcr rcs rct ric rii rik rio rir ris rit riy rkc rkk rko rks rkt rky roc roi rok roo ror ros rot roy rrc rri rrk rrr rrs rrt rsc rsi rsk rso rsr rss rst rtc rti rtk rto rtr rts rtt rty ry- ryc ryk ryo ryr rys ryy scc sci sck sco scr scs sct sic sii sik sio sir sis sit sk- skc ski skk sko skr sks skt sky soc soi sok soo sor sos sot soy sr- src sri srk sro srr srs srt sry ss- ssc ssi ssk sso ssr sss sst stc sti stk sto str sts stt sty sy- syc syi syk syr sys syt tcc tci tck tco tcr tcs tct tic tii tik tio tir tis tit tiy tkc tkk tko tkr tks tkt tky to- toc toi tok too tor tos tot toy trc tri trk tro trr trs trt try tsc tsi tsk tso tsr tss tst tsy ttc tti ttk tto ttr tts ttt tty tyc tyo tyr tys tyt ycc yci yco ycs ycy yii yio yir yis yit yki ykk yoc yoi yok yoo yor yos yot yoy yrc yro yrs yrt ysc ysi ysk yso ysr yss yst ysy ytc ytk yto ytr yts ytt yyc yys yyt yyy