-ic c-- ccc cci cck cco ccv ci- cic cii cik cio civ ckc cki cko co- coc coi cok coo cov cvc cvi cvk cvo cvv i-v icc ici ick ico icv iic iii iio ikc iki ikk iko ikv io- ioc ioi ioo iov ivc ivi ivo ivv kcc kci kck kic kii kik kio kiv kkc kki kkk kkv koc koi kok koo kvi kvk kvo kvv o-i oc- occ oci ock oco ocv oic oii oik oio oiv okc oki okk oko oo- ooc ooi ook ooo oov ov- ovc ovi ovo ovv vcc vci vco vi- vic vii vik vio viv voc voi vok voo vov vvc vvi vvo vvv