a-a a-b a-i aaa aab aad aae aah aai ab- aba abb abd abe abh abi ad- ada adb add ade adh adi aea aeb aed aee aeh aei aha ahb ahd ahe ahh ahi ai- aia aib aid aie aih aii baa bab bad bae bah bai bba bbb bbd bbe bbh bbi bda bdb bdd bde bdh bdi be- bea beb bed bee beh bei bha bhb bhd bhe bhh bhi bi- bia bib bid bie bih bii daa dab dad dae dah dai dba dbb dbd dbe dbh dbi dda ddb ddd dde ddh ddi de- dea deb ded dee deh dei dh- dha dhb dhd dhe dhh dhi di- dia dib did die dih dii eaa eab ead eae eah eai eba ebb ebd ebe ebh ebi ed- eda edb edd ede edh edi eea eeb eed eee eha ehb ehd ehe ehh ehi eia eib eid eie eii h-i haa hab had hae hah hai hba hbb hbd hbe hbh hbi hda hdb hdd hde hdh hdi he- hea heb hed hee heh hei hha hhb hhd hhe hhh hhi hia hib hid hie hih hii i-d ia- iaa iab iad iae iah iai iba ibb ibd ibe ibh ibi ida idb idd ide idh idi ie- iea ied iee iei iha ihb ihd ihe ihh ihi iia iib iid iie iih iii