-er -ol c-- ccc cce cch ccl cco ccr ce- cec cee ceh cel ceo cer ch- chc che chh chl cho chr cl- clc cle clh cll clo clr co- coc coe coh col coo cor crc cre crh crl cro crr ec- ecc ece ech ecl eco ecr eec eee eel eeo eer ehc ehe ehh ehl eho ehr elc ele elh ell elo elr eo- eoc eoe eoh eol eoo eor erc ere erh erl ero err hcc hce hch hcl hco hcr he- hec hee heh hel heo her hhc hhe hhh hhl hho hhr hlc hle hlh hll hlo hlr hoc hoe hoh hol hoo hor hr- hrc hre hrh hrl hro hrr lcc lce lch lcl lco lcr lec lee leh lel leo ler lhc lhh lho lhr llc lle lll llo llr loc loe loh lol loo lor lrc lrh lro lrr oc- occ och ocl oco ocr oec oee oeh oel oeo oer ohc ohe ohh ohl oho ohr olc ole oll olo oo- ooc ooh ool ooo oor or- orc ore orh orl oro orr rcc rce rch rcl rco rcr re- rec ree reh rel reo rer rh- rhc rhe rhh rhl rho rhr rlc rle rlh rll rlo rlr roc roe roh rol roo ror rrc rrh rrl rrr