a-do aaaa aaab aaad aaba aabb aabd aabt aada aadt aadu aaoo aata aatt abaa abab abad abat abau abb- abba abbb abbo abbt abda abdo abdu aboa abob abod aboo abot abou abta abtu abua abud abut adaa adab adad adao adat adba adda addd addo addu adob adod adoo adot adta adua adub aoba aotd aout at-t ataa atab atad atat atdt atob atod atot atta atto attu atua atub auaa audo aut- auto baaa baad baat baba babb babo babu bada badb badd bado badu bata bato batt batu bau- baud bbad bbau bbbb bbdd bbdo boab boad boat boba bobb bobo bobu boda bodb bodo bodu boob bood boot bota botb botd boto bott boua boud bout btaa btdt btob bttb buad buat buba bubb bubo bubu buda budb budd budo budu but- buta buto butt d-bo daab daad daau daba dabb dabo dabt dabu dada dado dadu daou data dato datt datu daub daud daut dbtt dddd ddot ddub doab doat doba dobb dobu dod- doda dodd dodo doob dood doot dota dotd doto dott doub doud dout dtaa dtot duaa duab duad duat dub- duba dubb dubu duda dudd dudo dudu duo- duta duut oaau obad obba obbo obdt obot obtd odbo odda oddd odoo odot odou odtu ooaa ooba ooda oooo ootb otbd oto- otoo otta otto ottu ouad ouat out- outa outb outo ouu- taa- taat taba tabb tabo tabu tada tado taoa taou tata tatb tato tatt tatu taua taub taut tbta tddb toab toad toat toau toba tobo tobt tobu toda todd todo todt todu tooa tood toot tota totd toto tott tout ttab ttbb tttt tuao tuat tuba tubb tubo tubu tudu tuta tuto tutt tutu tuuo uata uatu uaua ubba ubbo ubod ubud udaa udad udau udoo udot utau utto uttu uuta uuuu