a-a a-b a-c aaa aab aac aae aah aam aau ab- aba abb abc abe abh abm abu ac- aca acb acc ace ach acm acu aea aeb aec aee aeh aem aeu aha ahb ahc ahe ahh ahm ahu ama amb amc ame amh amm amu au- aua aub auc aue auh aum b-u baa bab bac bae bah bam bau bba bbb bbc bbe bbh bbm bbu bca bcb bcc bce bch bcm bcu be- bea beb bec bee beh bem beu bha bhb bhc bhe bhh bhm bhu bma bmb bmc bme bmh bmm bmu bua bub buc bue buh bum buu c-- caa cab cac cae cah cam cau cba cbb cbc cbe cbh cbm cbu cca ccb ccc cce cch ccm ccu ce- cea ceb cec cee ceh cem ceu ch- cha chb chc che chh chm chu cma cmb cmc cme cmh cmm cmu cua cub cuc cue cuh cum cuu eaa eab eac eae eah eam eau eba ebb ebc ebe ebh ebm ebu ec- eca ecb ecc ece ech ecm ecu eea eeb eec eee eem eha ehb ehc ehe ehh ehm ehu em- ema emb emc eme emh emm emu eu- eua eub euc eue haa hab hac hae hah ham hau hba hbb hbc hbe hbh hbm hbu hca hcb hcc hce hch hcm he- hea heb hec hee heh hem heu hha hhb hhc hhe hhh hhm hhu hma hmb hmc hme hmh hmm hmu hua hub huc hue huh hum huu maa mab mac mae mah mam mau mba mbb mbc mbe mbh mbm mbu mc- mca mcb mcc mce mch mcm mcu mea meb mec mee meh mem meu mha mhc mhh mhm mhu mma mmb mmc mme mmh mmm mmu mua mub muc mue muh mum muu ua- uaa uab uac uae uah uam uau uba ubb ubc ube ubh ubu uca ucb ucc uce uch ucm ucu uea ueb uec uee ueh uem uha uhb uhc uhe uhh uhm uhu um- uma umb umc ume umh umm umu uua uuc uue uum uuu