-er -ic c-- ccc ccd cce cci cco ccr ccs ccv cdc cdd cde cdi cdo cdr cds cdv ce- cec ced cee cei ceo cer ces cev ci- cic cid cie cii cio cir cis civ co- coc cod coe coi coo cor cos cov crc crd cre cri cro crr crs crv csc csd cse csi cso csr css csv cvc cvd cve cvi cvo cvr cvs cvv dcc dcd dce dci dco dcr dcs dcv ddc ddd dde ddi ddo ddr dds de- dec ded dee dei deo der des dev di- dic did die dii dio dir dis div doc dod doe doi doo dor dos dov drc drd dre dri dro drr drs drv dsc dsd dse dsi dso dsr dss dsv dvc dvd dve dvi dvr dvs ec- ecc ecd ece eci eco ecr ecs ecv ed- edc edd ede edi edo edr eds eec eed eee eeo eer ees eev eic eid eie eii eio eir eis eiv eo- eoc eod eoe eoi eoo eor eos erc erd ere eri ero err ers erv es- esc esd ese esi eso esr ess esv evc evd eve evi evo evr evs evv i-d i-v icc icd ice ici ico icr ics icv idc idd ide idi ido idr ids idv ie- iec ied iee iei ier ies iev iic iid iie iii iio iir iis io- ioc iod ioe ioi ioo ior ios iov ir- irc ird ire iri iro irr irs irv is- isc isd ise isi iso isr iss isv ivc ivd ive ivi ivo ivr ivs ivv o-i oc- occ ocd oci oco ocr ocs ocv odc odd ode odi odo odr ods odv oec oed oee oei oeo oer oes oic oid oie oii oio oir ois oiv oo- ooc ood ooi ooo oor oos oov or- orc ord ore ori oro orr ors orv os- osc osd ose osi oso osr oss osv ov- ovc ovd ove ovi ovo ovs ovv rcc rcd rce rci rco rcr rcs rcv rdc rdd rde rdi rdo rdr rds rdv re- rec red ree rei reo rer res rev ric rid rie rii rio rir ris riv roc rod roe roi roo ror ros rov rrc rrd rri rrr rrs rsc rsd rse rsi rso rsr rss rsv rvc rvd rve rvi rvo rvr rvs rvv scc scd sce sci sco scr scs scv sdc sdd sde sdi sdo sdr sds sdv se- sec sed see sei seo ser ses sev sic sid sie sii sio sir sis siv soc sod soe soi soo sor sos sov sr- src srd sre sri sro srr srs srv ss- ssc ssd sse ssi sso ssr sss ssv svc svd sve svi svo svr svs svv v-e vcc vcd vce vci vco vcr vcs vdc vdd vde vdi vdo vdr vds vdv vec ved vee vei veo ver ves vi- vic vid vie vii vio vir vis viv voc vod voe voi voo vor vos vov vrc vrd vre vri vrr vrs vsc vsd vse vsi vso vsr vss vsv vvc vvi vvo vvr vvs vvv