-ic c-- ccc cci cck cco ccr ccv ci- cic cii cik cio cir civ ckc cki cko cky co- coc coi cok coo cor cov coy crc cri crk cro crr crv cry cvc cvi cvk cvo cvr cvv cyc cyk cyo cyr i-v icc ici ick ico icr icv icy iic iii iio iir ikc iki ikk iko ikr ikv io- ioc ioi ioo ior iov ir- irc iri irk iro irr irv iry ivc ivi ivo ivr ivv ivy iyc iyo iyr iyy kcc kci kck kcr kic kii kik kio kir kiv kkc kki kkk kkr kkv kky koc koi kok koo kor koy krc kri krk kro krr krv kry kvi kvk kvo kvr kvv kyc kyo kyr o-i oc- occ oci ock oco ocr ocv oic oii oik oio oir oiv okc oki okk oko okr oo- ooc ooi ook ooo oor oov or- orc ori ork oro orr orv ory ov- ovc ovi ovo ovv oyi oyo rcc rci rco rcr rcv ric rii rik rio rir riv riy rkc rkk rko rkv rky roc roi rok roo ror rov roy rrc rri rrk rrr rvc rvi rvo rvr rvv rvy ry- ryc ryk ryo ryr ryy vcc vci vco vcr vcy vi- vic vii vik vio vir viv viy voc voi vok voo vor vov voy vrc vri vrk vrr vry vvc vvi vvo vvr vvv ycc yci yco ycv ycy yii yio yir yki ykk yoc yoi yok yoo yor yoy yrc yro yvi yvo yvr yvy yyc yyy