a-a a-b a-c aaa aab aac aad aag aan aay ab- aba abb abc abd abg abn aby ac- aca acb acc acd acg acn acy ad- ada adb adc add adg adn ady ag- aga agb agc agd agg agn agy an- ana anb anc and ang ann any ay- aya ayc ayd ayn baa bab bac bad bag ban bay bba bbb bbc bbd bbg bbn bby bca bcb bcc bcd bcg bcn bcy bda bdb bdc bdd bdg bdy bga bgb bgc bgd bgg bgn bna bnb bnc bnd bng bnn by- bya byc byd byg byn c-- caa cab cac cad cag can cay cba cbb cbc cbd cbg cbn cby cca ccb ccc ccd ccg ccn cda cdb cdc cdd cdg cdn cdy cga cgb cgc cgd cgg cgn cgy cn- cna cnb cnc cnd cng cnn cny cya cyb cyc cyd cyg cyn daa dab dac dad dag dan day dba dbb dbc dbd dbg dbn dby dca dcb dcc dcd dcg dcn dda ddb ddc ddd ddg ddn ddy dga dgc dgd dgg dgn dna dnb dnc dnd dng dnn dny dy- dya dyb dyc dyd dyn dyy g-d gaa gab gac gad gag gan gay gba gbc gbd gbg gbn gby gca gcb gcc gcd gcg gcn gda gdb gdc gdd gdn gga ggb ggc ggd ggg ggn gna gnb gnc gnd gnn gy- gya gyb gyd gyn naa nab nac nad nag nan nay nba nbb nbc nbd nbg nbn nca ncb ncc ncd ncg ncn nda ndb ndc ndd ndg ndn ndy nga ngb ngc ngd ngg ngn nna nnb nnc nng nnn nya nyc nyd nyg nyn nyy yaa yab yac yad yag yan yay ybc ybg yby yca ycc ycd ycy yda ydg ydn ydy yga ygc yna ynd yng ynn yny yyb yyc yyg yyy