-ic c-- ccc cci cck cco ccs ccv ccz ci- cic cii cik cio cis civ ckc cki cko cks cky co- coc coi cok coo cos cov coy coz csc csi csk cso css csv csy csz cvc cvi cvk cvo cvs cvv cvz cyc cyk cyo cys cz- czc czk czo i-v icc ici ick ico ics icv icy icz iic iii iio iis ikc iki ikk iko iks ikv io- ioc ioi ioo ios iov is- isc isi isk iso iss isv isy ivc ivi ivo ivs ivv ivy iyc iyo iys iyy izi izo izy izz k-z kcc kci kck kcs kic kii kik kio kis kiv kiz kkc kki kkk kks kkv kky koc koi kok koo kos koy koz ksc ksi ksk kso kss ksv kvi kvk kvo kvs kvv kyc kyo kys kyz kzo kzy o-i oc- occ oci ock oco ocs ocv ocz oic oii oik oio ois oiv oiz okc oki okk oko oks oo- ooc ooi ook ooo oos oov os- osc osi osk oso oss osv ov- ovc ovi ovo ovs ovv oyi oyo oys ozo ozs ozz scc sci sck sco scs scv sic sii sik sio sis siv sk- skc ski skk sko sks sky soc soi sok soo sos sov soy soz ss- ssc ssi ssk sso sss ssv ssz svc svi svk svo svs svv svy svz sy- syc syi syk sys szi vcc vci vco vcs vcy vi- vic vii vik vio vis viv viy viz voc voi vok voo vos vov voy voz vsc vsi vsk vso vss vsv vvc vvi vvo vvs vvv vvz ycc yci yco ycs ycv ycy yii yio yis yiz yki ykk yoc yoi yok yoo yos yoy ysc ysi ysk yso yss ysy ysz yvi yvo yvy yyc yys yyy yyz yzy zco zcs zik zio zis ziv ziz zks zo- zoc zoi zok zoo zos zsi zsz zvi zzs zzy zzz