a-a a-b aaa aab aae aah aak aau ab- aba abb abe abh abk abu aea aeb aee aeh aek aeu aha ahb ahe ahh ahk ahu aka akb ake akh akk aku au- aua aub aue auh auk b-u baa bab bae bah bak bau bba bbb bbe bbh bbk bbu be- bea beb bee beh bek beu bha bhb bhe bhh bhk bhu bka bkb bke bkk bua bub bue buh buk buu eaa eab eae eah eak eau eba ebb ebe ebh ebk ebu eea eeb eee eek eha ehb ehe ehh ehu eka ekb eke ekh eku eu- eua eub eue haa hab hae hah hak hau hba hbb hbe hbh hbk hbu he- hea heb hee heh hek heu hha hhb hhe hhh hhk hhu hka hkb hkh hkk hku hua hub hue huh huk huu ka- kaa kab kae kah kak kau kba kbb kbe kbh kbk kbu ke- kea keb kee keh kek kha khe khh khk khu kkb kke kkh kkk kku kub kue kuh kuk kuu ua- uaa uab uae uah uak uau uba ubb ube ubh ubk ubu uea ueb uee ueh uha uhb uhe uhh uhu uka ukb uke ukk uku uua uue uuu