a-a a-b a-c aaa aab aac aag aah aam aan ab- aba abb abc abg abh abm abn ac- aca acb acc acg ach acm acn ag- aga agb agc agg agh agm agn aha ahb ahc ahg ahh ahm ahn ama amb amc amg amh amm amn an- ana anb anc ang anh anm ann baa bab bac bag bah bam ban bba bbb bbc bbg bbh bbm bbn bca bcb bcc bcg bch bcm bcn bga bgb bgc bgg bgh bgm bgn bha bhb bhc bhg bhh bhm bma bmb bmc bmg bmh bmm bmn bna bnb bnc bng bnn c-- caa cab cac cag cah cam can cba cbb cbc cbg cbh cbm cbn cca ccb ccc ccg cch ccm ccn cga cgb cgc cgg cgh cgm cgn ch- cha chb chc chg chh chm chn cma cmb cmc cmg cmh cmm cmn cn- cna cnb cnc cng cnh cnm cnn gaa gab gac gag gah gam gan gba gbc gbg gbh gbm gbn gca gcb gcc gcg gch gcm gcn gga ggb ggc ggg ggh ggm ggn gha ghb ghc ghg ghh ghn gma gmb gmc gmg gmh gmm gmn gna gnb gnc gnm gnn haa hab hac hag hah ham han hba hbb hbc hbg hbh hbm hbn hca hcb hcc hcg hch hcm hcn hga hgb hgc hgg hgh hgm hgn hha hhb hhc hhg hhh hhm hhn hma hmb hmc hmg hmh hmm hna hnb hnc hng hnh hnn maa mab mac mag mah mam man mba mbb mbc mbg mbh mbm mc- mca mcb mcc mcg mch mcm mcn mga mgb mgc mgh mgm mgn mha mhc mhg mhh mhm mhn mma mmb mmc mmg mmh mmm mmn mna mnb mnc mng mnm mnn naa nab nac nag nah nam nan nba nbb nbc nbg nbm nbn nca ncb ncc ncg nch ncm ncn nga ngb ngc ngg ngh ngm ngn nha nhb nhc nhg nhh nhm nhn nma nmb nmc nmg nmh nmm nmn nna nnb nnc nng nnh nnm nnn