-er a-a a-c aaa aac aae aah aak aam aao aar ac- aca acc ace ach ack acm aco acr aea aec aee aeh aek aem aeo aer aha ahc ahe ahh ahk ahm aho ahr aka akc ake akh akk akm ako akr ama amc ame amh amk amm amo amr aoa aoc aoe aoh aok aom aoo aor ar- ara arc are arh ark arm aro arr c-- caa cac cae cah cak cam cao car cca ccc cce cch cck ccm cco ccr ce- cea cec cee ceh cek cem ceo cer ch- cha chc che chh chk chm cho chr cka ckc ckh ckm cko cma cmc cme cmh cmk cmm cmo cmr co- coa coc coe coh cok com coo cor cra crc cre crh crk crm cro crr eaa eac eae eah eak eam eao ear ec- eca ecc ece ech eck ecm eco ecr eea eec eee eek eem eeo eer eha ehc ehe ehh ehm eho ehr eka ekc eke ekh eko ekr em- ema emc eme emh emk emm emo emr eo- eoa eoc eoe eoh eok eom eoo eor era erc ere erh erk erm ero err haa hac hae hah hak ham hao har hca hcc hce hch hck hcm hco hcr he- hea hec hee heh hek hem heo her hha hhc hhe hhh hhk hhm hho hhr hka hkh hkk hkm hko hkr hma hmc hme hmh hmk hmm hmo hmr hoa hoc hoe hoh hok hom hoo hor hr- hra hrc hre hrh hrk hrm hro hrr ka- kaa kac kae kah kak kam kao kar kca kcc kce kch kck kcm kcr ke- kea kec kee keh kek kem keo ker kha khe khh khk khm kho khr kkc kke kkh kkk kkm kkr kma kmc kme kmh kmk kmm kmo koa koc koe koh kok kom koo kor kra krc krk kro krr m-o m-r maa mac mae mah mak mam mao mar mc- mca mcc mce mch mck mcm mco mcr mea mec mee meh mek mem meo mer mha mhc mhh mhk mhm mho mhr mka mkc mke mkh mkk mkm mko mkr mma mmc mme mmh mmk mmm mmo mmr moa moc moe moh mok mom moo mor mra mrc mre mrh mrk mrm mro mrr oaa oac oae oah oak oam oao oar oc- oca occ och ock ocm oco ocr oea oec oee oeh oem oeo oer oha ohc ohe ohh ohm oho ohr oka okc oke okk oko okr om- oma omc ome omh omm omo omr oo- ooa ooc ooh ook oom ooo oor or- ora orc ore orh ork orm oro orr ra- raa rac rae rah rak ram rao rar rca rcc rce rch rcm rco rcr re- rea rec ree reh rek rem reo rer rh- rha rhc rhe rhh rhm rho rhr rkc rke rkk rkm rko rma rmc rme rmh rmm rmo rmr roa roc roe roh rok rom roo ror rra rrc rrh rrk rrm rrr