a-a a-b a-i aaa aab aag aah aai ab- aba abb abg abh abi ag- aga agb agg agh agi aha ahb ahg ahh ahi ai- aia aib aig aih aii baa bab bag bah bai bba bbb bbg bbh bbi bga bgb bgg bgh bgi bha bhb bhg bhh bhi bi- bia bib big bih bii gaa gab gag gah gai gba gbg gbh gbi gga ggb ggg ggh ggi gha ghb ghg ghh ghi gia gib gig gih gii h-i haa hab hag hah hai hba hbb hbg hbh hbi hga hgb hgg hgh hgi hha hhb hhg hhh hhi hia hib hig hih hii ia- iaa iab iag iah iai iba ibb ibg ibh ibi iga igb igg igh igi iha ihb ihg ihh ihi iia iib iih iii