a-a a-b aaa aab aag aah aaw ab- aba abb abg abh abw ag- aga agb agg agh agw aha ahb ahg ahh ahw aw- awa awb awg awh aww baa bab bag bah baw bba bbb bbg bbh bbw bga bgb bgg bgh bgw bha bhb bhg bhh bhw bwa bwb bwg bwh gaa gab gag gah gaw gba gbg gbh gbw gga ggb ggg ggh ggw gha ghb ghg ghh gwa gwb gwg haa hab hag hah haw hba hbb hbg hbh hbw hga hgb hgg hgh hgw hha hhb hhg hhh hhw hw- hwa hwb hwg hww waa wab wag wah waw wba wbb wbg wbw wga wgb wgh wgw wh- wha whb whh whw wwa www