-ic c-- ccc cci cck cco ccs cct ccz ci- cic cii cik cio cis cit ckc cki cko cks ckt co- coc coi cok coo cos cot coz csc csi csk cso css cst csz ctc cti ctk cto cts ctt ctz cz- czc czk czo czt icc ici ick ico ics ict icz 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 itz izi izo izz k-t k-z kcc kci kck kcs kct kic kii kik kio kis kit kiz kkc kki kkk kks kkt koc koi kok koo kos kot koz ksc ksi ksk kso kss kst ktc ktk kto kts ktt kzo o-i oc- occ oci ock oco ocs oct ocz oic oii oik oio ois oit oiz 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 otz ozo ozs ozt ozz 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 soz ss- ssc ssi ssk sso sss sst ssz stc sti stk sto sts stt stz szi tcc tci tck tco tcs tct tic tii tik tio tis tit tiz tkc tkk tko tks tkt tkz to- toc toi tok too tos tot toz tsc tsi tsk tso tss tst ttc tti ttk tto tts ttt tzs zco zcs zik zio zis zit ziz zks zo- zoc zoi zok zoo zos zot zsi zst zsz zzs zzt zzz