a-a a-b a-c aaa aab aac aae aah aam aan aau ab- aba abb abc abe abh abm abn abu ac- aca acb acc ace ach acm acn acu aea aeb aec aee aeh aem aen aeu aha ahb ahc ahe ahh ahm ahn ahu ama amb amc ame amh amm amn amu an- ana anb anc ane anh anm ann anu au- aua aub auc aue auh aum aun b-u baa bab bac bae bah bam ban bau bba bbb bbc bbe bbh bbm bbn bbu bca bcb bcc bce bch bcm bcn bcu be- bea beb bec bee beh bem ben beu bha bhb bhc bhe bhh bhm bhu bma bmb bmc bme bmh bmm bmn bmu bna bnb bnc bne bnn bnu bua bub buc bue buh bum bun buu c-- caa cab cac cae cah cam can cau cba cbb cbc cbe cbh cbm cbn cbu cca ccb ccc cce cch ccm ccn ccu ce- cea ceb cec cee ceh cem cen ceu ch- cha chb chc che chh chm chn chu cma cmb cmc cme cmh cmm cmn cmu cn- cna cnb cnc cne cnh cnm cnn cnu cua cub cuc cue cuh cum cun cuu eaa eab eac eae eah eam ean eau eba ebb ebc ebe ebh ebm ebn ebu ec- eca ecb ecc ece ech ecm ecn ecu eea eeb eec eee eem een eha ehb ehc ehe ehh ehm ehn ehu em- ema emb emc eme emh emm emn emu en- ena enb enc ene enh enm enn enu eu- eua eub euc eue eun haa hab hac hae hah ham han hau hba hbb hbc hbe hbh hbm hbn hbu hca hcb hcc hce hch hcm hcn he- hea heb hec hee heh hem hen heu hha hhb hhc hhe hhh hhm hhn hhu hma hmb hmc hme hmh hmm hmu hna hnb hnc hne hnh hnn hnu hua hub huc hue huh hum hun huu maa mab mac mae mah mam man mau mba mbb mbc mbe mbh mbm mbu mc- mca mcb mcc mce mch mcm mcn mcu mea meb mec mee meh mem men meu mha mhc mhh mhm mhn mhu mma mmb mmc mme mmh mmm mmn mmu mna mnb mnc mne mnm mnn mnu mua mub muc mue muh mum mun muu naa nab nac nae nah nam nan nau nba nbb nbc nbe nbm nbn nbu nca ncb ncc nce nch ncm ncn ncu ne- nea neb nec nee neh nem nen neu nha nhb nhc nhe nhh nhm nhn nhu nma nmb nmc nme nmh nmm nmn nmu nna nnb nnc nne nnh nnm nnn nnu nua nub nuc nue nuh num nun nuu ua- uaa uab uac uae uah uam uan uau uba ubb ubc ube ubh ubn ubu uca ucb ucc uce uch ucm ucn ucu uea ueb uec uee ueh uem uen uha uhb uhc uhe uhh uhm uhu um- uma umb umc ume umh umm umn umu un- una unb unc une unh unm unn unu uua uuc uue uum uun uuu