-ic c-- ccc ccd cci cco ccr cct ccv cdc cdd cdi cdo cdr cdt cdv ci- cic cid cii cio cir cit civ co- coc cod coi coo cor cot cov crc crd cri cro crr crt crv ctc ctd cti cto ctr ctt ctv cvc cvd cvi cvo cvr cvt cvv dcc dcd dci dco dcr dct dcv ddc ddd ddi ddo ddr ddt di- dic did dii dio dir dit div doc dod doi doo dor dot dov drc drd dri dro drr drt drv dtc dtd dti dto dtr dtt dtv dvc dvd dvi dvr dvt i-d i-v icc icd ici ico icr ict icv idc idd idi ido idr idt idv iic iid iii iio iir iit io- ioc iod ioi ioo ior iot iov ir- irc ird iri iro irr irt irv itc itd iti ito itt itv ivc ivd ivi ivo ivr ivt ivv o-i oc- occ ocd oci oco ocr oct ocv odc odd odi odo odr odt odv oic oid oii oio oir oit oiv oo- ooc ood ooi ooo oor oot oov or- orc ord ori oro orr ort orv ot- otc otd oti oto otr ott otv ov- ovc ovd ovi ovo ovv rcc rcd rci rco rcr rct rcv rdc rdd rdi rdo rdr rdt rdv ric rid rii rio rir rit riv roc rod roi roo ror rot rov rrc rrd rri rrr rrt rtc rtd rti rto rtr rtt rtv rvc rvd rvi rvo rvr rvt rvv tcc tcd tci tco tcr tct tcv tdc tdd tdi tdo tdr tdt tdv tic tid tii tio tir tit tiv to- toc tod toi too tor tot tov trc trd tri tro trr trt trv ttc ttd tti tto ttr ttt ttv tvc tvd tvi tvo tvr tvt vcc vcd vci vco vcr vct vdc vdd vdi vdo vdr vdt vdv vi- vic vid vii vio vir vit viv voc vod voi voo vor vot vov vrc vrd vri vrr vrt vtc vti vto vtr vtt vtv vvc vvi vvo vvr vvt vvv