-ic c-- ccc cci cck cco ccs cct ci- cic cii cik cio cis cit ckc cki cko cks ckt co- coc coi cok coo cos cot csc csi csk cso css cst ctc cti ctk cto cts ctt icc ici ick ico ics ict iic iii iio iis iit ikc iki ikk iko iks ikt io- ioc ioi ioo ios iot is- isc isi isk iso iss ist itc iti itk ito its itt k-t kcc kci kck kcs kct kic kii kik kio kis kit kkc kki kkk kks kkt koc koi kok koo kos kot ksc ksi ksk kso kss kst ktc ktk kto kts ktt 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 scc sci sck sco scs sct sic sii sik sio sis sit sk- skc ski skk sko sks skt soc soi sok soo sos sot ss- ssc ssi ssk sso sss sst stc sti stk sto sts stt tcc tci tck tco tcs tct tic tii tik tio tis tit tkc tkk tko tks tkt to- toc toi tok too tos tot tsc tsi tsk tso tss tst ttc tti ttk tto tts ttt