a-do a-fu aaaa aaab aaad aaaf aaal aaba aabb aabd aabl aada aadu aafa aafb aafd aaff aafl aala aald aall aalo aalu aaoo abaa abab abad abaf abal abau abb- abba abbb abbo abda abdo abdu abff abla ablo aboa abob abod abof abol aboo abou abua abud abuf abul adaa adab adad adal adao adba adda addd addl addo addu adfa adfl adob adod adoo adua adub afaa afad afao afdb afdl affa affo afla afoa afol afoo afua afud alaa alad alal alao alau alb- alba albo albu ald- alda aldl aldo alfa all- alla alll allo allu aloa alod alof alol aloo alou alua aluf aoba aola aouf aoul auaa audo aul- aula auld aulf aull aulo aulu auol baaa baad baaf baal baba babb babo babu bada badb badd bado badu baff bafo bala bald balf ball balo balu baol bau- baud bauf baul bbad bbau bbbb bbdd bbdo bblb bduf bffl blaa blab blad blau blob blod bloo blou blub blud bluf boab boad boal boba bobb bobo bobu boda bodb bodo bodu bofa bofd boff bofu bola bold boll bolo bolu boob bood boof bool boua boud bouf boul buad bual buba bubb bubo bubu buda budb budd budl budo budu buff bufo bula bulb buld bull bulu buol d-bo daab daad daal daau daba dabb dabo dabu dada dado dadu dafa daff dafo dala dalf dall dalo dalu daou daub daud dbfo dddd ddub dfaf dffa dlab dlbd doab doal doba dobb dobl dobu dod- doda dodd dodo doff dola dold dolf doll dolo dolu doob dood doof dool doub doud douf doul duaa duab duad dual dub- duba dubb dubu duda dudd dudo dudu duff dufu dula dull dulo dulu duo- duul faaa faad faba fabd fabo fabu fada fadd fado fafa faff fafo fala fald fall falo falu faud faul fbla fdoa ffff flab flad flao flob flod floo flou flub flud fluf fluo foad foaf foal foba foda fofo fola fold foll folo food foof fool foua foud foul fuad fubb fubu fuda fudd fuff fufu fula full fulu laaa laad laal laba labo labu lada ladd lado ladu lafb laff lala lald lall lalo lalu laou laub laud lauf laul llao lldb llll lloa llod lloo llud load loaf lob- loba lobb lobo loda lofa loff lola lold loll lolo loob lood loof lool loud loul louu luau luba luda ludd ludo luff lufu lula lull lulu luua oaau oafo oall obad obal obba obbo obla oblu obol odal odbo odda oddd odla odoo odou off- offa offo offu ofla olaf olba olbo oldb olfa olla ollo olof ooaa ooba ooda ooff oola oold oolo oooo ouad ouff oula ould oulu ouu- uafa uald uaua ubal ubba ubbo ubla ublo ubod ubud udaa udad udal udau udoo uffa ulaa ulad ulla ullo ulo- ulua ulul uofa uofl uofo uulu uuuu