-al a-a a-b a-c aaa aab aac aag aal aan aau ab- aba abb abc abg abl abn abu ac- aca acb acc acg acl acn acu ag- aga agb agc agg agl agn agu al- ala alb alc alg all aln alu an- ana anb anc ang anl ann anu au- aua aub auc aug aul aun b-u baa bab bac bag bal ban bau bba bbb bbc bbg bbl bbn bbu bca bcb bcc bcg bcl bcn bcu bga bgb bgc bgg bgl bgn bgu bla blb blc blg bll bln blu bna bnb bnc bng bnl bnn bnu bua bub buc bug bul bun buu c-- caa cab cac cag cal can cau cba cbb cbc cbg cbl cbn cbu cca ccb ccc ccg ccl ccn ccu cga cgb cgc cgg cgl cgn cgu cl- cla clb clc clg cll cln clu cn- cna cnb cnc cng cnl cnn cnu cua cub cuc cug cul cun cuu gaa gab gac gag gal gan gau gba gbc gbg gbl gbn gbu gca gcb gcc gcg gcl gcn gcu gga ggb ggc ggg ggn ggu gla glb glc glg gll gln glu gna gnb gnc gnl gnn gnu gu- gua gub guc gug gul gun guu la- laa lab lac lag lal lan lau lba lbb lbc lbg lbl lbu lca lcb lcc lcg lcl lcn lcu lga lgb lgc lgg lgl lgn lgu lla llb llc llg lll lln llu lna lnb lnc lng lnl lnn lnu lua lub luc lug lul lun luu naa nab nac nag nal nan nau nba nbb nbc nbg nbl nbn nbu nca ncb ncc ncg ncl ncn ncu nga ngb ngc ngg ngl ngn ngu nla nlb nlc nlg nll nln nlu nna nnb nnc nng nnl nnn nnu nua nub nuc nug nul nun nuu ua- uaa uab uac uag ual uan uau uba ubb ubc ubg ubl ubn ubu uca ucb ucc ucg ucl ucn ucu uga ugb ugc ugg ugl ugn ugu ula ulb ulc ulg ull uln ulu un- una unb unc ung unl unn unu uua uuc uug uun uuu