-ey a-a a-b a-c aaa aab aac aae aag aan aau aay ab- aba abb abc abe abg abn abu aby ac- aca acb acc ace acg acn acu acy aea aeb aec aee aeg aen aeu aey ag- aga agb agc age agg agn agu agy an- ana anb anc ane ang ann anu any au- aua aub auc aue aug aun ay- aya ayc aye ayn ayu b-u baa bab bac bae bag ban bau bay bba bbb bbc bbe bbg bbn bbu bby bca bcb bcc bce bcg bcn bcu bcy be- bea beb bec bee beg ben beu bey bga bgb bgc bge bgg bgn bgu bna bnb bnc bne bng bnn bnu bua bub buc bue bug bun buu buy by- bya byc bye byg byn byu c-- caa cab cac cae cag can cau cay cba cbb cbc cbe cbg cbn cbu cby cca ccb ccc cce ccg ccn ccu ce- cea ceb cec cee ceg cen ceu cey cga cgb cgc cge cgg cgn cgu cgy cn- cna cnb cnc cne cng cnn cnu cny cua cub cuc cue cug cun cuu cuy cya cyb cyc cye cyg cyn eaa eab eac eae eag ean eau eba ebb ebc ebe ebg ebn ebu eby ec- eca ecb ecc ece ecg ecn ecu eea eeb eec eee eeg een eey ega egb egc ege egg egn egu egy en- ena enb enc ene eng enn enu eny eu- eua eub euc eue eug eun eya eyc eye eyn gaa gab gac gae gag gan gau gay gba gbc gbe gbg gbn gbu gby gca gcb gcc gce gcg gcn gcu ge- gea geb gec gee geg gen geu gey gga ggb ggc ggg ggn ggu gna gnb gnc gne gnn gnu gu- gua gub guc gue gug gun guu guy gy- gya gyb gye gyn naa nab nac nae nag nan nau nay nba nbb nbc nbe nbg nbn nbu nca ncb ncc nce ncg ncn ncu ne- nea neb nec nee neg nen neu ney nga ngb ngc nge ngg ngn ngu nna nnb nnc nne nng nnn nnu nua nub nuc nue nug nun nuu nuy nya nyc nye nyg nyn nyu nyy ua- uaa uab uac uae uag uan uau uay uba ubb ubc ube ubg ubn ubu uby uca ucb ucc uce ucg ucn ucu uea ueb uec uee ueg uen uey uga ugb ugc uge ugg ugn ugu un- una unb unc une ung unn unu uny uua uuc uue uug uun uuu uyc uyu yaa yab yac yae yag yan yau yay ybc ybe ybg yby yca ycc yce ycu ycy yea yeb yec yee yeg yen yey yga ygc yna yne yng ynn ynu yny yua yue yug yun yuu yuy yyb yyc yye yyg yyu yyy