a-fu aaaa aaab aaaf aaal aaba aabb aabl aafa aafb aaff aafl aala aall aalu abaa abab abaf abal abau abb- abba abbb abff abla abua abuf abul afaa affa afla afua alaa alal alau alb- alba albu alfa all- alla alll allu alua aluf auaa aul- aula aulf aull aulu baaa baaf baal baba babb babu baff bala balf ball balu bau- bauf baul bbau bbbb bblb bffl blaa blab blau blub bluf bual buba bubb bubu buff bula bulb bull bulu faaa faba fabu fafa faff fala fall falu faul fbla ffff flab flub fluf fubb fubu fuff fufu fula full fulu laaa laal laba labu lafb laff lala lall lalu laub lauf laul llll luau luba luff lufu lula lull lulu luua uafa uaua ubal ubba ubla uffa ulaa ulla ulua ulul uulu uuuu