a-a a-b a-c aaa aab aac aae aag aam aau ab- aba abb abc abe abg abm abu ac- aca acb acc ace acg acm acu aea aeb aec aee aeg aem aeu ag- aga agb agc age agg agm agu ama amb amc ame amg amm amu au- aua aub auc aue aug aum b-u baa bab bac bae bag bam bau bba bbb bbc bbe bbg bbm bbu bca bcb bcc bce bcg bcm bcu be- bea beb bec bee beg bem beu bga bgb bgc bge bgg bgm bgu bma bmb bmc bme bmg bmm bmu bua bub buc bue bug bum buu c-- caa cab cac cae cag cam cau cba cbb cbc cbe cbg cbm cbu cca ccb ccc cce ccg ccm ccu ce- cea ceb cec cee ceg cem ceu cga cgb cgc cge cgg cgm cgu cma cmb cmc cme cmg cmm cmu cua cub cuc cue cug cum cuu eaa eab eac eae eag eam eau eba ebb ebc ebe ebg ebm ebu ec- eca ecb ecc ece ecg ecm ecu eea eeb eec eee eeg eem ega egb egc ege egg egm egu em- ema emb emc eme emg emm emu eu- eua eub euc eue eug gaa gab gac gae gag gam gau gba gbc gbe gbg gbm gbu gca gcb gcc gce gcg gcm gcu ge- gea geb gec gee geg gem geu gga ggb ggc ggg ggm ggu gma gmb gmc gme gmg gmm gu- gua gub guc gue gug gum guu maa mab mac mae mag mam mau mba mbb mbc mbe mbg mbm mbu mc- mca mcb mcc mce mcg mcm mcu mea meb mec mee meg mem meu mga mgb mgc mge mgm mgu mma mmb mmc mme mmg mmm mmu mua mub muc mue mug mum muu ua- uaa uab uac uae uag uam uau uba ubb ubc ube ubg ubu uca ucb ucc uce ucg ucm ucu uea ueb uec uee ueg uem uga ugb ugc uge ugg ugm ugu um- uma umb umc ume umg umm umu uua uuc uue uug uum uuu