-er -ol c-- ccc cce cch cck ccl cco ccr ce- cec cee ceh cek cel ceo cer ch- chc che chh chk chl cho chr ckc ckh cko cl- clc cle clh clk cll clo clr co- coc coe coh cok col coo cor crc cre crh crk crl cro crr ec- ecc ece ech eck ecl eco ecr eec eee eek eel eeo eer ehc ehe ehh ehl eho ehr ekc eke ekh ekl eko ekr elc ele elh elk ell elo elr eo- eoc eoe eoh eok eol eoo eor erc ere erh erk erl ero err hcc hce hch hck hcl hco hcr he- hec hee heh hek hel heo her hhc hhe hhh hhk hhl hho hhr hkh hkk hkl hko hkr hlc hle hlh hll hlo hlr hoc hoe hoh hok hol hoo hor hr- hrc hre hrh hrk hrl hro hrr kcc kce kch kck kcl kcr ke- kec kee keh kek kel keo ker khe khh khk kho khr kkc kke kkh kkk kkl kkr kl- klc klh klo klr koc koe koh kok kol koo kor krc krk krl kro krr lcc lce lch lck lcl lco lcr lec lee leh lek lel leo ler lhc lhh lhk lho lhr lkh lkl lkr llc lle llk lll llo llr loc loe loh lok lol loo lor lrc lrh lrk lro lrr oc- occ och ock ocl oco ocr oec oee oeh oel oeo oer ohc ohe ohh ohl oho ohr okc oke okk okl oko okr olc ole olk oll olo oo- ooc ooh ook ool ooo oor or- orc ore orh ork orl oro orr rcc rce rch rcl rco rcr re- rec ree reh rek rel reo rer rh- rhc rhe rhh rhl rho rhr rkc rke rkk rko rlc rle rlh rll rlo rlr roc roe roh rok rol roo ror rrc rrh rrk rrl rrr