-al a-a a-b a-c aaa aab aac aag aah aal ab- aba abb abc abg abh abl ac- aca acb acc acg ach acl ag- aga agb agc agg agh agl aha ahb ahc ahg ahh ahl al- ala alb alc alg alh all baa bab bac bag bah bal bba bbb bbc bbg bbh bbl bca bcb bcc bcg bch bcl bga bgb bgc bgg bgh bgl bha bhb bhc bhg bhh bhl bla blb blc blg blh bll c-- caa cab cac cag cah cal cba cbb cbc cbg cbh cbl cca ccb ccc ccg cch ccl cga cgb cgc cgg cgh cgl ch- cha chb chc chg chh chl cl- cla clb clc clg clh cll gaa gab gac gag gah gal gba gbc gbg gbh gbl gca gcb gcc gcg gch gcl gga ggb ggc ggg ggh gha ghb ghc ghg ghh ghl gla glb glc glg glh gll haa hab hac hag hah hal hba hbb hbc hbg hbh hbl hca hcb hcc hcg hch hcl hga hgb hgc hgg hgh hgl hha hhb hhc hhg hhh hhl hla hlb hlc hlg hlh hll la- laa lab lac lag lah lal lba lbb lbc lbg lbh lbl lca lcb lcc lcg lch lcl lga lgb lgc lgg lgh lgl lha lhb lhc lhh lla llb llc llg lll