-er -ol c-- ccc cce cch cck ccl cco ccr ccu ce- cec cee ceh cek cel ceo cer ceu ch- chc che chh chk chl cho chr chu ckc ckh cko cl- clc cle clh clk cll clo clr clu co- coc coe coh cok col coo cor cou crc cre crh crk crl cro crr cru cuc cue cuh cuk cul cuo cur cuu ec- ecc ece ech eck ecl eco ecr ecu eec eee eek eel eeo eer ehc ehe ehh ehl eho ehr ehu ekc eke ekh ekl eko ekr eku elc ele elh elk ell elo elr elu eo- eoc eoe eoh eok eol eoo eor eou erc ere erh erk erl ero err eru eu- euc eue eul eur hcc hce hch hck hcl hco hcr he- hec hee heh hek hel heo her heu hhc hhe hhh hhk hhl hho hhr hhu hkh hkk hkl hko hkr hku hlc hle hlh hll hlo hlr hlu hoc hoe hoh hok hol hoo hor hou hr- hrc hre hrh hrk hrl hro hrr hru huc hue huh huk hul huo hur huu kcc kce kch kck kcl kcr kcu ke- kec kee keh kek kel keo ker khe khh khk kho khr khu kkc kke kkh kkk kkl kkr kku kl- klc klh klo klr klu koc koe koh kok kol koo kor kou krc krk krl kro krr kru kuc kue kuh kuk kul kur kuu lcc lce lch lck lcl lco lcr lcu lec lee leh lek lel leo ler leu lhc lhh lhk lho lhr lhu lkh lkl lkr llc lle llk lll llo llr llu loc loe loh lok lol loo lor lou lrc lrh lrk lro lrr lru luc lue luh luk lul luo lur luu oc- occ och ock ocl oco ocr ocu oec oee oeh oel oeo oer ohc ohe ohh ohl oho ohr ohu okc oke okk okl oko okr oku olc ole olk oll olo olu oo- ooc ooh ook ool ooo oor or- orc ore orh ork orl oro orr oru ou- ouc oue ouh ouk oul ouo our rcc rce rch rcl rco rcr rcu re- rec ree reh rek rel reo rer reu rh- rhc rhe rhh rhl rho rhr rhu rkc rke rkk rko rku rlc rle rlh rll rlo rlr rlu roc roe roh rok rol roo ror rou rrc rrh rrk rrl rrr rru ruc rue ruh ruk ruo rur ruu ucc uce uch uck ucl uco ucr ucu uec uee ueh uel uer uhc uhe uhh uhl uho uhr uhu ukc uke ukk ukl ukr uku ulc ule ulk ull ulo ulr ulu uoc uoe uok uol uoo uor ur- urc ure urk url uro urr uru uuc uue uur uuu