-er -ol c-- ccc ccd cce ccl cco ccr ccv cdc cdd cde cdl cdo cdr cdv ce- cec ced cee cel ceo cer cev cl- clc cld cle cll clo clr clv co- coc cod coe col coo cor cov crc crd cre crl cro crr crv cvc cvd cve cvl cvo cvr cvv dcc dcd dce dcl dco dcr dcv ddc ddd dde ddl ddo ddr de- dec ded dee del deo der dev dl- dlc dld dle dll dlo dlr dlv doc dod doe dol doo dor dov drc drd dre drl dro drr drv dvc dvd dve dvl dvr ec- ecc ecd ece ecl eco ecr ecv ed- edc edd ede edl edo edr eec eed eee eel eeo eer eev elc eld ele ell elo elr elv eo- eoc eod eoe eol eoo eor erc erd ere erl ero err erv evc evd eve evl evo evr evv lcc lcd lce lcl lco lcr lcv ldc ldd lde ldl ldo ldr ldv lec led lee lel leo ler lev llc lld lle lll llo llr llv loc lod loe lol loo lor lov lrc lrd lro lrr lrv lvc lvd lve lvl lvr lvv oc- occ ocd ocl oco ocr ocv odc odd ode odl odo odr odv oec oed oee oel oeo oer olc old ole oll olo oo- ooc ood ool ooo oor oov or- orc ord ore orl oro orr orv ov- ovc ovd ove ovl ovo ovv rcc rcd rce rcl rco rcr rcv rdc rdd rde rdl rdo rdr rdv re- rec red ree rel reo rer rev rlc rld rle rll rlo rlr roc rod roe rol roo ror rov rrc rrd rrl rrr rvc rvd rve rvl rvo rvr rvv v-e vcc vcd vce vcl vco vcr vdc vdd vde vdl vdo vdr vdv vec ved vee vel veo ver vl- vlc vld vle vll vlo vlv voc vod voe vol voo vor vov vrc vrd vre vrr vvc vvo vvr vvv