-ic c-- ccc ccd cci cco ccr ccv cdc cdd cdi cdo cdr cdv ci- cic cid cii cio cir civ co- coc cod coi coo cor cov crc crd cri cro crr crv cvc cvd cvi cvo cvr cvv dcc dcd dci dco dcr dcv ddc ddd ddi ddo ddr di- dic did dii dio dir div doc dod doi doo dor dov drc drd dri dro drr drv dvc dvd dvi dvr i-d i-v icc icd ici ico icr icv idc idd idi ido idr idv iic iid iii iio iir io- ioc iod ioi ioo ior iov ir- irc ird iri iro irr irv ivc ivd ivi ivo ivr ivv o-i oc- occ ocd oci oco ocr ocv odc odd odi odo odr odv oic oid oii oio oir oiv oo- ooc ood ooi ooo oor oov or- orc ord ori oro orr orv ov- ovc ovd ovi ovo ovv rcc rcd rci rco rcr rcv rdc rdd rdi rdo rdr rdv ric rid rii rio rir riv roc rod roi roo ror rov rrc rrd rri rrr rvc rvd rvi rvo rvr rvv vcc vcd vci vco vcr vdc vdd vdi vdo vdr vdv vi- vic vid vii vio vir viv voc vod voi voo vor vov vrc vrd vri vrr vvc vvi vvo vvr vvv