-er -ol c-- ccc ccd cce cch ccl cco ccr cdc cdd cde cdh cdl cdo cdr ce- cec ced cee ceh cel ceo cer ch- chc chd che chh chl cho chr cl- clc cld cle clh cll clo clr co- coc cod coe coh col coo cor crc crd cre crh crl cro crr dcc dcd dce dcl dco dcr ddc ddd dde ddh ddl ddo ddr de- dec ded dee deh del deo der dh- dhc dhd dhe dhh dhl dho dhr dl- dlc dld dle dlh dll dlo dlr doc dod doe doh dol doo dor drc drd dre drl dro drr ec- ecc ecd ece ech ecl eco ecr ed- edc edd ede edh edl edo edr eec eed eee eel eeo eer ehc ehd ehe ehh ehl eho ehr elc eld ele elh ell elo elr eo- eoc eod eoe eoh eol eoo eor erc erd ere erh erl ero err hcc hcd hce hch hcl hco hcr hdc hdd hde hdh hdl hdo hdr he- hec hed hee heh hel heo her hhc hhd hhe hhh hhl hho hhr hlc hld hle hlh hll hlo hlr hoc hod hoe hoh hol hoo hor hr- hrc hrd hre hrh hrl hro hrr lcc lcd lce lch lcl lco lcr ldc ldd lde ldh ldl ldo ldr lec led lee leh lel leo ler lhc lhd lhh lho lhr llc lld lle lll llo llr loc lod loe loh lol loo lor lrc lrd lrh lro lrr oc- occ ocd och ocl oco ocr odc odd ode odh odl odo odr oec oed oee oeh oel oeo oer ohc ohd ohe ohh ohl oho ohr olc old ole oll olo oo- ooc ood ooh ool ooo oor or- orc ord ore orh orl oro orr rcc rcd rce rch rcl rco rcr rdc rdd rde rdh rdl rdo rdr re- rec red ree reh rel reo rer rh- rhc rhd rhe rhh rhl rho rhr rlc rld rle rlh rll rlo rlr roc rod roe roh rol roo ror rrc rrd rrh rrl rrr