-er a-a a-c aaa aac aae aah aam aao aar ac- aca acc ace ach acm aco acr aea aec aee aeh aem aeo aer aha ahc ahe ahh ahm aho ahr ama amc ame amh amm amo amr aoa aoc aoe aoh aom aoo aor ar- ara arc are arh arm aro arr c-- caa cac cae cah cam cao car cca ccc cce cch ccm cco ccr ce- cea cec cee ceh cem ceo cer ch- cha chc che chh chm cho chr cma cmc cme cmh cmm cmo cmr co- coa coc coe coh com coo cor cra crc cre crh crm cro crr eaa eac eae eah eam eao ear ec- eca ecc ece ech ecm eco ecr eea eec eee eem eeo eer eha ehc ehe ehh ehm eho ehr em- ema emc eme emh emm emo emr eo- eoa eoc eoe eoh eom eoo eor era erc ere erh erm ero err haa hac hae hah ham hao har hca hcc hce hch hcm hco hcr he- hea hec hee heh hem heo her hha hhc hhe hhh hhm hho hhr hma hmc hme hmh hmm hmo hmr hoa hoc hoe hoh hom hoo hor hr- hra hrc hre hrh hrm hro hrr m-o m-r maa mac mae mah mam mao mar mc- mca mcc mce mch mcm mco mcr mea mec mee meh mem meo mer mha mhc mhh mhm mho mhr mma mmc mme mmh mmm mmo mmr moa moc moe moh mom moo mor mra mrc mre mrh mrm mro mrr oaa oac oae oah oam oao oar oc- oca occ och ocm oco ocr oea oec oee oeh oem oeo oer oha ohc ohe ohh ohm oho ohr om- oma omc ome omh omm omo omr oo- ooa ooc ooh oom ooo oor or- ora orc ore orh orm oro orr ra- raa rac rae rah ram rao rar rca rcc rce rch rcm rco rcr re- rea rec ree reh rem reo rer rh- rha rhc rhe rhh rhm rho rhr rma rmc rme rmh rmm rmo rmr roa roc roe roh rom roo ror rra rrc rrh rrm rrr