-er -ic c-- ccc ccd cce cci cco ccr ccv cdc cdd cde cdi cdo cdr cdv ce- cec ced cee cei ceo cer cev ci- cic cid cie cii cio cir civ co- coc cod coe coi coo cor cov crc crd cre cri cro crr crv cvc cvd cve cvi cvo cvr cvv dcc dcd dce dci dco dcr dcv ddc ddd dde ddi ddo ddr de- dec ded dee dei deo der dev di- dic did die dii dio dir div doc dod doe doi doo dor dov drc drd dre dri dro drr drv dvc dvd dve dvi dvr ec- ecc ecd ece eci eco ecr ecv ed- edc edd ede edi edo edr eec eed eee eeo eer eev eic eid eie eii eio eir eiv eo- eoc eod eoe eoi eoo eor erc erd ere eri ero err erv evc evd eve evi evo evr evv i-d i-v icc icd ice ici ico icr icv idc idd ide idi ido idr idv ie- iec ied iee iei ier iev iic iid iie iii iio iir io- ioc iod ioe ioi ioo ior iov ir- irc ird ire iri iro irr irv ivc ivd ive ivi ivo ivr ivv o-i oc- occ ocd oci oco ocr ocv odc odd ode odi odo odr odv oec oed oee oei oeo oer oic oid oie oii oio oir oiv oo- ooc ood ooi ooo oor oov or- orc ord ore ori oro orr orv ov- ovc ovd ove ovi ovo ovv rcc rcd rce rci rco rcr rcv rdc rdd rde rdi rdo rdr rdv re- rec red ree rei reo rer rev ric rid rie rii rio rir riv roc rod roe roi roo ror rov rrc rrd rri rrr rvc rvd rve rvi rvo rvr rvv v-e vcc vcd vce vci vco vcr vdc vdd vde vdi vdo vdr vdv vec ved vee vei veo ver vi- vic vid vie vii vio vir viv voc vod voe voi voo vor vov vrc vrd vre vri vrr vvc vvi vvo vvr vvv