-ic c-- ccc cci cck cco ccs cct ccv ci- cic cii cik cio cis cit civ ckc cki cko cks ckt co- coc coi cok coo cos cot cov csc csi csk cso css cst csv ctc cti ctk cto cts ctt ctv cvc cvi cvk cvo cvs cvt cvv i-v icc ici ick ico ics ict icv iic iii iio iis iit ikc iki ikk iko iks ikt ikv io- ioc ioi ioo ios iot iov is- isc isi isk iso iss ist isv itc iti itk ito its itt itv ivc ivi ivo ivs ivt ivv k-t kcc kci kck kcs kct kic kii kik kio kis kit kiv kkc kki kkk kks kkt kkv koc koi kok koo kos kot ksc ksi ksk kso kss kst ksv ktc ktk kto kts ktt ktv kvi kvk kvo kvs kvv o-i oc- occ oci ock oco ocs oct ocv oic oii oik oio ois oit oiv okc oki okk oko oks oo- ooc ooi ook ooo oos oot oov os- osc osi osk oso oss ost osv ot- otc oti otk oto ots ott otv ov- ovc ovi ovo ovs ovv scc sci sck sco scs sct scv sic sii sik sio sis sit siv sk- skc ski skk sko sks skt soc soi sok soo sos sot sov ss- ssc ssi ssk sso sss sst ssv stc sti stk sto sts stt stv svc svi svk svo svs svt svv tcc tci tck tco tcs tct tcv tic tii tik tio tis tit tiv tkc tkk tko tks tkt to- toc toi tok too tos tot tov tsc tsi tsk tso tss tst tsv ttc tti ttk tto tts ttt ttv tvc tvi tvk tvo tvs tvt vcc vci vco vcs vct vi- vic vii vik vio vis vit viv vkt voc voi vok voo vos vot vov vsc vsi vsk vso vss vst vsv vtc vti vtk vto vts vtt vtv vvc vvi vvo vvs vvt vvv