-er -ic c-- ccc ccd cce cci ccp ccr ccs ccv cdc cdd cde cdi cdp cdr cds cdv ce- cec ced cee cei cep cer ces cev ci- cic cid cie cii cip cir cis civ cpc cpd cpe cpi cpp cpr cps cpv crc crd cre cri crp crr crs crv csc csd cse csi csp csr css csv cvc cvd cve cvi cvp cvr cvs cvv dcc dcd dce dci dcp dcr dcs dcv ddc ddd dde ddi ddp ddr dds de- dec ded dee dei dep der des dev di- dic did die dii dip dir dis div dpc dpd dpe dpi dpp dpr dps dpv drc drd dre dri drp drr drs drv dsc dsd dse dsi dsp dsr dss dsv dvc dvd dve dvi dvp dvr dvs ec- ecc ecd ece eci ecr ecs ecv ed- edc edd ede edi edp edr eds eec eed eee eep eer ees eev eic eid eie eii eip eir eis eiv ep- epc epd epe epi epp epr eps erc erd ere eri erp err ers erv es- esc esd ese esi esp esr ess esv evc evd eve evi evp evr evs evv i-d i-v icc icd ice ici icp icr ics icv idc idd ide idi idp idr ids idv ie- iec ied iee iei iep ier ies iev iic iid iie iii iip iir iis ipc ipd ipe ipi ipp ipr ips ipv ir- irc ird ire iri irp irr irs irv is- isc isd ise isi isp isr iss isv ivc ivd ive ivi ivp ivr ivs ivv p-p pcc pcd pce pci pcp pcr pcs pcv pdc pdd pde pdi pdp pdr pds pdv pec ped pee pei pep per pes pev pic pid pie pii pip pir pis piv ppc ppd ppe ppi ppp ppr pps ppv prc prd pre pri prp prr prs prv ps- psc psd pse psi psp psr pss psv pvc pvd pve pvi pvp pvr pvs pvv rcc rcd rce rci rcp rcr rcs rcv rdc rdd rde rdi rdp rdr rds rdv re- rec red ree rei rep rer res rev ric rid rie rii rip rir ris riv rpc rpd rpe rpi rpp rpr rps rpv rrc rrd rri rrp rrr rrs rsc rsd rse rsi rsp rsr rss rsv rvc rvd rve rvi rvp rvr rvs rvv scc scd sce sci scp scr scs scv sdc sdd sde sdi sdp sdr sds sdv se- sec sed see sei sep ser ses sev sic sid sie sii sip sir sis siv spc spd spe spi spp spr sps spv sr- src srd sre sri srp srr srs srv ss- ssc ssd sse ssi ssp ssr sss ssv svc svd sve svi svp svr svs svv v-e vcc vcd vce vci vcp vcr vcs vdc vdd vde vdi vdp vdr vds vdv vec ved vee vei vep ver ves vi- vic vid vie vii vip vir vis viv vpc vpd vpe vpi vpp vpr vps vrc vrd vre vri vrp vrr vrs vsc vsd vse vsi vsp vsr vss vsv vvc vvi vvr vvs vvv