a-a a-b aaa aab aad aae aah aau ab- aba abb abd abe abh abu ad- ada adb add ade adh adu aea aeb aed aee aeh aeu aha ahb ahd ahe ahh ahu au- aua aub aud aue auh b-u baa bab bad bae bah bau bba bbb bbd bbe bbh bbu bda bdb bdd bde bdh bdu be- bea beb bed bee beh beu bha bhb bhd bhe bhh bhu bua bub bud bue buh buu daa dab dad dae dah dau dba dbb dbd dbe dbh dbu dda ddb ddd dde ddh ddu de- dea deb ded dee deh deu dh- dha dhb dhd dhe dhh dhu dua dub dud due duh eaa eab ead eae eah eau eba ebb ebd ebe ebh ebu ed- eda edb edd ede edh edu eea eeb eed eee eha ehb ehd ehe ehh ehu eu- eua eub eud eue haa hab had hae hah hau hba hbb hbd hbe hbh hbu hda hdb hdd hde hdh hdu he- hea heb hed hee heh heu hha hhb hhd hhe hhh hhu hua hub hud hue huh huu ua- uaa uab uad uae uah uau uba ubb ube ubh ubu uda udb udd ude udu uea ueb ued uee ueh uha uhb uhd uhe uhh uhu uua uue uuu