-er -ol c-- ccc ccd cce ccl cco ccr cdc cdd cde cdl cdo cdr ce- cec ced cee cel ceo cer cl- clc cld cle cll clo clr co- coc cod coe col coo cor crc crd cre crl cro crr dcc dcd dce dcl dco dcr ddc ddd dde ddl ddo ddr de- dec ded dee del deo der dl- dlc dld dle dll dlo dlr doc dod doe dol doo dor drc drd dre drl dro drr ec- ecc ecd ece ecl eco ecr ed- edc edd ede edl edo edr eec eed eee eel eeo eer elc eld ele ell elo elr eo- eoc eod eoe eol eoo eor erc erd ere erl ero err lcc lcd lce lcl lco lcr ldc ldd lde ldl ldo ldr lec led lee lel leo ler llc lld lle lll llo llr loc lod loe lol loo lor lrc lrd lro lrr oc- occ ocd ocl oco ocr odc odd ode odl odo odr oec oed oee oel oeo oer olc old ole oll olo oo- ooc ood ool ooo oor or- orc ord ore orl oro orr rcc rcd rce rcl rco rcr rdc rdd rde rdl rdo rdr re- rec red ree rel reo rer rlc rld rle rll rlo rlr roc rod roe rol roo ror rrc rrd rrl rrr