-ic c-- ccc cci cck cco ccs cct ci- cic cii cik cio cis cit ckc cki cko cks ckt cky co- coc coi cok coo cos cot coy csc csi csk cso css cst csy ctc cti ctk cto cts ctt cty cyc cyk cyo cys cyt icc ici ick ico ics ict icy iic iii iio iis iit ikc iki ikk iko iks ikt io- ioc ioi ioo ios iot is- isc isi isk iso iss ist isy itc iti itk ito its itt ity iyc iyo iys iyt iyy k-t kcc kci kck kcs kct kic kii kik kio kis kit kkc kki kkk kks kkt kky koc koi kok koo kos kot koy ksc ksi ksk kso kss kst ktc ktk kto kts ktt kyc kyo kys kyt o-i oc- occ oci ock oco ocs oct oic oii oik oio ois oit okc oki okk oko oks oo- ooc ooi ook ooo oos oot os- osc osi osk oso oss ost ot- otc oti otk oto ots ott oyi oyo oys scc sci sck sco scs sct sic sii sik sio sis sit sk- skc ski skk sko sks skt sky soc soi sok soo sos sot soy ss- ssc ssi ssk sso sss sst stc sti stk sto sts stt sty sy- syc syi syk sys syt tcc tci tck tco tcs tct tic tii tik tio tis tit tiy tkc tkk tko tks tkt tky to- toc toi tok too tos tot toy tsc tsi tsk tso tss tst tsy ttc tti ttk tto tts ttt tty tyc tyo tys tyt ycc yci yco ycs ycy yii yio yis yit yki ykk yoc yoi yok yoo yos yot yoy ysc ysi ysk yso yss yst ysy ytc ytk yto yts ytt yyc yys yyt yyy