a-a a-b a-c aaa aab aac aag aam aan aau ab- aba abb abc abg abm abn abu ac- aca acb acc acg acm acn acu ag- aga agb agc agg agm agn agu ama amb amc amg amm amn amu an- ana anb anc ang anm ann anu au- aua aub auc aug aum aun b-u baa bab bac bag bam ban bau bba bbb bbc bbg bbm bbn bbu bca bcb bcc bcg bcm bcn bcu bga bgb bgc bgg bgm bgn bgu bma bmb bmc bmg bmm bmn bmu bna bnb bnc bng bnn bnu bua bub buc bug bum bun buu c-- caa cab cac cag cam can cau cba cbb cbc cbg cbm cbn cbu cca ccb ccc ccg ccm ccn ccu cga cgb cgc cgg cgm cgn cgu cma cmb cmc cmg cmm cmn cmu cn- cna cnb cnc cng cnm cnn cnu cua cub cuc cug cum cun cuu gaa gab gac gag gam gan gau gba gbc gbg gbm gbn gbu gca gcb gcc gcg gcm gcn gcu gga ggb ggc ggg ggm ggn ggu gma gmb gmc gmg gmm gmn gna gnb gnc gnm gnn gnu gu- gua gub guc gug gum gun guu maa mab mac mag mam man mau mba mbb mbc mbg mbm mbu mc- mca mcb mcc mcg mcm mcn mcu mga mgb mgc mgm mgn mgu mma mmb mmc mmg mmm mmn mmu mna mnb mnc mng mnm mnn mnu mua mub muc mug mum mun muu naa nab nac nag nam nan nau nba nbb nbc nbg nbm nbn nbu nca ncb ncc ncg ncm ncn ncu nga ngb ngc ngg ngm ngn ngu nma nmb nmc nmg nmm nmn nmu nna nnb nnc nng nnm nnn nnu nua nub nuc nug num nun nuu ua- uaa uab uac uag uam uan uau uba ubb ubc ubg ubn ubu uca ucb ucc ucg ucm ucn ucu uga ugb ugc ugg ugm ugn ugu um- uma umb umc umg umm umn umu un- una unb unc ung unm unn unu uua uuc uug uum uun uuu