-ic c-- ccc cci cck cco ccr ccv ci- cic cii cik cio cir civ ckc cki cko co- coc coi cok coo cor cov crc cri crk cro crr crv cvc cvi cvk cvo cvr cvv i-v icc ici ick ico icr icv iic iii iio iir ikc iki ikk iko ikr ikv io- ioc ioi ioo ior iov ir- irc iri irk iro irr irv ivc ivi ivo ivr ivv kcc kci kck kcr kic kii kik kio kir kiv kkc kki kkk kkr kkv koc koi kok koo kor krc kri krk kro krr krv kvi kvk kvo kvr kvv 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 ov- ovc ovi ovo ovv rcc rci rco rcr rcv ric rii rik rio rir riv rkc rkk rko rkv roc roi rok roo ror rov rrc rri rrk rrr rvc rvi rvo rvr rvv vcc vci vco vcr vi- vic vii vik vio vir viv voc voi vok voo vor vov vrc vri vrk vrr vvc vvi vvo vvr vvv