-er -ic c-- ccc ccd cce cci ccr ccv cdc cdd cde cdi cdr cdv ce- cec ced cee cei cer cev ci- cic cid cie cii cir civ crc crd cre cri crr crv cvc cvd cve cvi cvr cvv dcc dcd dce dci dcr dcv ddc ddd dde ddi ddr de- dec ded dee dei der dev di- dic did die dii dir div drc drd dre dri drr drv dvc dvd dve dvi dvr ec- ecc ecd ece eci ecr ecv ed- edc edd ede edi edr eec eed eee eer eev eic eid eie eii eir eiv erc erd ere eri err erv evc evd eve evi evr evv i-d i-v icc icd ice ici icr icv idc idd ide idi idr idv ie- iec ied iee iei ier iev iic iid iie iii iir ir- irc ird ire iri irr irv ivc ivd ive ivi ivr ivv rcc rcd rce rci rcr rcv rdc rdd rde rdi rdr rdv re- rec red ree rei rer rev ric rid rie rii rir riv rrc rrd rri rrr rvc rvd rve rvi rvr rvv v-e vcc vcd vce vci vcr vdc vdd vde vdi vdr vdv vec ved vee vei ver vi- vic vid vie vii vir viv vrc vrd vre vri vrr vvc vvi vvr vvv