-ic c-- ccc cci cco ccr ccs ccv ci- cic cii cio cir cis civ co- coc coi coo cor cos cov crc cri cro crr crs crv csc csi cso csr css csv cvc cvi cvo cvr cvs cvv i-v icc ici ico icr ics icv iic iii iio iir iis io- ioc ioi ioo ior ios iov ir- irc iri iro irr irs irv is- isc isi iso isr iss isv ivc ivi ivo ivr ivs ivv o-i oc- occ oci oco ocr ocs ocv oic oii oio oir ois oiv oo- ooc ooi ooo oor oos oov or- orc ori oro orr ors orv os- osc osi oso osr oss osv ov- ovc ovi ovo ovs ovv rcc rci rco rcr rcs rcv ric rii rio rir ris riv roc roi roo ror ros rov rrc rri rrr rrs rsc rsi rso rsr rss rsv rvc rvi rvo rvr rvs rvv scc sci sco scr scs scv sic sii sio sir sis siv soc soi soo sor sos sov sr- src sri sro srr srs srv ss- ssc ssi sso ssr sss ssv svc svi svo svr svs svv vcc vci vco vcr vcs vi- vic vii vio vir vis viv voc voi voo vor vos vov vrc vri vrr vrs vsc vsi vso vsr vss vsv vvc vvi vvo vvr vvs vvv