-er -ic c-- ccc ccd cce cci ccp ccr ccv cdc cdd cde cdi cdp cdr cdv ce- cec ced cee cei cep cer cev ci- cic cid cie cii cip cir civ cpc cpd cpe cpi cpp cpr cpv crc crd cre cri crp crr crv cvc cvd cve cvi cvp cvr cvv dcc dcd dce dci dcp dcr dcv ddc ddd dde ddi ddp ddr de- dec ded dee dei dep der dev di- dic did die dii dip dir div dpc dpd dpe dpi dpp dpr dpv drc drd dre dri drp drr drv dvc dvd dve dvi dvp dvr ec- ecc ecd ece eci ecr ecv ed- edc edd ede edi edp edr eec eed eee eep eer eev eic eid eie eii eip eir eiv ep- epc epd epe epi epp epr erc erd ere eri erp err erv evc evd eve evi evp evr evv i-d i-v icc icd ice ici icp icr icv idc idd ide idi idp idr idv ie- iec ied iee iei iep ier iev iic iid iie iii iip iir ipc ipd ipe ipi ipp ipr ipv ir- irc ird ire iri irp irr irv ivc ivd ive ivi ivp ivr ivv p-p pcc pcd pce pci pcp pcr pcv pdc pdd pde pdi pdp pdr pdv pec ped pee pei pep per pev pic pid pie pii pip pir piv ppc ppd ppe ppi ppp ppr ppv prc prd pre pri prp prr prv pvc pvd pve pvi pvp pvr pvv rcc rcd rce rci rcp rcr rcv rdc rdd rde rdi rdp rdr rdv re- rec red ree rei rep rer rev ric rid rie rii rip rir riv rpc rpd rpe rpi rpp rpr rpv rrc rrd rri rrp rrr rvc rvd rve rvi rvp rvr rvv v-e vcc vcd vce vci vcp vcr vdc vdd vde vdi vdp vdr vdv vec ved vee vei vep ver vi- vic vid vie vii vip vir viv vpc vpd vpe vpi vpp vpr vrc vrd vre vri vrp vrr vvc vvi vvr vvv