a-fu aaaa aaab aaad aaaf aaal aaba aabb aabd aabl aada aadu aafa aafb aafd aaff aafl aala aald aall aalu abaa abab abad abaf abal abau abb- abba abbb abda abdu abff abla abua abud abuf abul adaa adab adad adal adba adda addd addl addu adfa adfl adua adub afaa afad afdb afdl affa afla afua afud alaa alad alal alau alb- alba albu ald- alda aldl alfa all- alla alll allu alua aluf auaa aul- aula auld aulf aull aulu baaa baad baaf baal baba babb babu bada badb badd badu baff bala bald balf ball balu bau- baud bauf baul bbad bbau bbbb bbdd bblb bduf bffl blaa blab blad blau blub blud bluf buad bual buba bubb bubu buda budb budd budl budu buff bula bulb buld bull bulu daab daad daal daau daba dabb dabu dada dadu dafa daff dala dalf dall dalu daub daud dddd ddub dfaf dffa dlab dlbd duaa duab duad dual dub- duba dubb dubu duda dudd dudu duff dufu dula dull dulu duul faaa faad faba fabd fabu fada fadd fafa faff fala fald fall falu faud faul fbla ffff flab flad flub flud fluf fuad fubb fubu fuda fudd fuff fufu fula full fulu laaa laad laal laba labu lada ladd ladu lafb laff lala lald lall lalu laub laud lauf laul lldb llll llud luau luba luda ludd luff lufu lula lull lulu luua uafa uald uaua ubal ubba ubla ubud udaa udad udal udau uffa ulaa ulad ulla ulua ulul uulu uuuu