-er a-a a-c aaa aac aae aam aao aar aas aau ac- aca acc ace acm aco acr acs acu aea aec aee aem aeo aer aes aeu ama amc ame amm amo amr ams amu aoa aoc aoe aom aoo aor aos aou ar- ara arc are arm aro arr ars aru as- asa asc ase asm aso asr ass asu au- aua auc aue aum auo aur aus c-- caa cac cae cam cao car cas cau cca ccc cce ccm cco ccr ccs ccu ce- cea cec cee cem ceo cer ces ceu cma cmc cme cmm cmo cmr cms cmu co- coa coc coe com coo cor cos cou cra crc cre crm cro crr crs cru csa csc cse csm cso csr css csu cua cuc cue cum cuo cur cus cuu eaa eac eae eam eao ear eas eau ec- eca ecc ece ecm eco ecr ecs ecu eea eec eee eem eeo eer ees em- ema emc eme emm emo emr ems emu eo- eoa eoc eoe eom eoo eor eos eou era erc ere erm ero err ers eru es- esa esc ese esm eso esr ess esu eu- eua euc eue eur eus m-o m-r maa mac mae mam mao mar mas mau mc- mca mcc mce mcm mco mcr mcs mcu mea mec mee mem meo mer mes meu mma mmc mme mmm mmo mmr mms mmu moa moc moe mom moo mor mos mou mra mrc mre mrm mro mrr mrs mru msa msc mse msm mso msr mss msu mua muc mue mum mur mus muu oaa oac oae oam oao oar oas oau oc- oca occ ocm oco ocr ocs ocu oea oec oee oem oeo oer oes om- oma omc ome omm omo omr oms omu oo- ooa ooc oom ooo oor oos or- ora orc ore orm oro orr ors oru os- osa osc ose osm oso osr oss osu ou- oua ouc oue oum ouo our ous ra- raa rac rae ram rao rar ras rau rca rcc rce rcm rco rcr rcs rcu re- rea rec ree rem reo rer res reu rma rmc rme rmm rmo rmr rms roa roc roe rom roo ror ros rou rra rrc rrm rrr rrs rru rsa rsc rse rsm rso rsr rss rsu rua ruc rue rum ruo rur rus ruu saa sac sae sam sao sar sas sau sca scc sce scm sco scr scs scu se- sea sec see sem seo ser ses seu sma smc sme smm smo smr sms smu soa soc soe som soo sor sos sou sr- sra src sre srm sro srr srs ss- ssa ssc sse ssm sso ssr sss ssu sua suc sue sum suo sur sus suu ua- uaa uac uae uam uao uar uas uau uca ucc uce ucm uco ucr ucs ucu uea uec uee uem uer ues um- uma umc ume umm umo umr ums umu uoa uoc uoe uom uoo uor uos ur- ura urc ure urm uro urr urs uru usa usc use usm uso usr uss usu uua uuc uue uum uur uus uuu