a-a a-b a-i aaa aab aae aah aai ab- aba abb abe abh abi aea aeb aee aeh aei aha ahb ahe ahh ahi ai- aia aib aie aih aii baa bab bae bah bai bba bbb bbe bbh bbi be- bea beb bee beh bei bha bhb bhe bhh bhi bi- bia bib bie bih bii eaa eab eae eah eai eba ebb ebe ebh ebi eea eeb eee eha ehb ehe ehh ehi eia eib eie eii h-i haa hab hae hah hai hba hbb hbe hbh hbi he- hea heb hee heh hei hha hhb hhe hhh hhi hia hib hie hih hii ia- iaa iab iae iah iai iba ibb ibe ibh ibi ie- iea iee iei iha ihb ihe ihh ihi iia iib iie iih iii