-er a-a a-b a-c aaa aab aac aae aah aam aan aar aau ab- aba abb abc abe abh abm abn abr abu ac- aca acb acc ace ach acm acn acr acu aea aeb aec aee aeh aem aen aer aeu aha ahb ahc ahe ahh ahm ahn ahr ahu ama amb amc ame amh amm amn amr amu an- ana anb anc ane anh anm ann anr anu ar- ara arb arc are arh arm arn arr aru au- aua aub auc aue auh aum aun aur b-u baa bab bac bae bah bam ban bar bau bba bbb bbc bbe bbh bbm bbn bbr bbu bca bcb bcc bce bch bcm bcn bcr bcu be- bea beb bec bee beh bem ben ber beu bha bhb bhc bhe bhh bhm bhr bhu bma bmb bmc bme bmh bmm bmn bmr bmu bna bnb bnc bne bnn bnr bnu bra brb bre brh brm brn brr bru bua bub buc bue buh bum bun bur buu c-- caa cab cac cae cah cam can car cau cba cbb cbc cbe cbh cbm cbn cbr cbu cca ccb ccc cce cch ccm ccn ccr ccu ce- cea ceb cec cee ceh cem cen cer ceu ch- cha chb chc che chh chm chn chr chu cma cmb cmc cme cmh cmm cmn cmr cmu cn- cna cnb cnc cne cnh cnm cnn cnr cnu cra crb crc cre crh crm crn crr cru cua cub cuc cue cuh cum cun cur cuu eaa eab eac eae eah eam ean ear eau eba ebb ebc ebe ebh ebm ebn ebr ebu ec- eca ecb ecc ece ech ecm ecn ecr ecu eea eeb eec eee eem een eer eha ehb ehc ehe ehh ehm ehn ehr ehu em- ema emb emc eme emh emm emn emr emu en- ena enb enc ene enh enm enn enr enu era erb erc ere erh erm ern err eru eu- eua eub euc eue eun eur haa hab hac hae hah ham han har hau hba hbb hbc hbe hbh hbm hbn hbr hbu hca hcb hcc hce hch hcm hcn hcr he- hea heb hec hee heh hem hen her heu hha hhb hhc hhe hhh hhm hhn hhr hhu hma hmb hmc hme hmh hmm hmr hmu hna hnb hnc hne hnh hnn hnu hr- hra hrb hrc hre hrh hrm hrn hrr hru hua hub huc hue huh hum hun hur huu m-r maa mab mac mae mah mam man mar mau mba mbb mbc mbe mbh mbm mbr mbu mc- mca mcb mcc mce mch mcm mcn mcr mcu mea meb mec mee meh mem men mer meu mha mhc mhh mhm mhn mhr mhu mma mmb mmc mme mmh mmm mmn mmr mmu mna mnb mnc mne mnm mnn mnr mnu mra mrb mrc mre mrh mrm mrn mrr mru mua mub muc mue muh mum mun mur muu naa nab nac nae nah nam nan nar nau nba nbb nbc nbe nbm nbn nbr nbu nca ncb ncc nce nch ncm ncn ncr ncu ne- nea neb nec nee neh nem nen ner neu nha nhb nhc nhe nhh nhm nhn nhr nhu nma nmb nmc nme nmh nmm nmn nmr nmu nna nnb nnc nne nnh nnm nnn nnu nra nrb nrc nre nrm nrn nrr nru nua nub nuc nue nuh num nun nur nuu ra- raa rab rac rae rah ram ran rar rau rba rbb rbc rbe rbh rbm rbn rbr rbu rca rcb rcc rce rch rcm rcn rcr rcu re- rea reb rec ree reh rem ren rer reu rh- rha rhb rhc rhe rhh rhm rhn rhr rhu rma rmb rmc rme rmh rmm rmn rmr rna rnb rnc rnh rnm rnn rnr rnu rra rrb rrc rrh rrm rrn rrr rru rua rub ruc rue ruh rum run rur ruu ua- uaa uab uac uae uah uam uan uar uau uba ubb ubc ube ubh ubn ubr ubu uca ucb ucc uce uch ucm ucn ucr ucu uea ueb uec uee ueh uem uen uer uha uhb uhc uhe uhh uhm uhr uhu um- uma umb umc ume umh umm umn umr umu un- una unb unc une unh unm unn unr unu ur- ura urb urc ure urm urn urr uru uua uuc uue uum uun uur uuu