a-a a-b a-c a-t aaa aab aac aae aam aat aau ab- aba abb abc abe abm abt abu ac- aca acb acc ace acm act acu aea aeb aec aee aem aet aeu ama amb amc ame amm amt amu at- ata atb atc ate atm att atu au- aua aub auc aue aum aut b-u baa bab bac bae bam bat bau bba bbb bbc bbe bbm bbt bbu bca bcb bcc bce bcm bct bcu be- bea beb bec bee bem bet beu bma bmb bmc bme bmm bmt bmu bta btb btc bte btm btt btu bua bub buc bue bum but buu c-- caa cab cac cae cam cat cau cba cbb cbc cbe cbm cbt cbu cca ccb ccc cce ccm cct ccu ce- cea ceb cec cee cem cet ceu cma cmb cmc cme cmm cmt cmu cta ctb ctc cte ctm ctt ctu cua cub cuc cue cum cut cuu eaa eab eac eae eam eat eau eba ebb ebc ebe ebm ebt ebu ec- eca ecb ecc ece ecm ect ecu eea eeb eec eee eem eet em- ema emb emc eme emm emt emu eta etb etc ete etm ett etu eu- eua eub euc eue eut maa mab mac mae mam mat mau mba mbb mbc mbe mbm mbt mbu mc- mca mcb mcc mce mcm mct mcu mea meb mec mee mem met meu mma mmb mmc mme mmm mmt mmu mta mtb mtc mte mtm mtt mtu mua mub muc mue mum mut muu taa tab tac tae tam tat tau tba tbb tbc tbe tbm tbt tbu tca tcb tcc tce tcm tct tcu te- tea teb tec tee tem tet teu tma tmb tmc tme tmm tmt tmu tta ttb ttc tte ttm ttt ttu tua tub tuc tue tum tut tuu ua- uaa uab uac uae uam uat uau uba ubb ubc ube ubt ubu uca ucb ucc uce ucm uct ucu uea ueb uec uee uem uet um- uma umb umc ume umm umt umu uta utb utc ute utm utt utu uua uuc uue uum uut uuu