a-fu a-ha aaaa aaab aaac aaaf aaah aaal aaba aabb aabc aabh aabl aaca aacb aacc aacf aach aacl aacu aafa aafb aafc aaff aafl aaha aahl aala aalc aall aalu abaa abab abac abaf abal abau abb- abba abbb abca abcb abcc abcf abch abcl abff abha abla abua abuf abul acaa acab acac acba acbl acca accc accf acch accu acfc acfl acha achh achl achu acla aclc aclu acu- acuf acul afaa afca afcb afcc afch afcu affa affc afla aflc afua ahab ahac ahah ahal ahau ahfa ahha ahla ahlu ahua alaa alac alal alau alb- alba albc albu alca alcc alfa alha all- alla allh alll allu alua aluf auaa auca auch aufc aul- aula aulf aull aulu baaa baaf baah baal baba babb babu bac- baca bacc bach bafc baff baha bahl bahu bala balc balf ball balu bau- bauf baul bbau bbbb bbch bbfc bblb bcaa bcbc bcca bccc bccl bcfc bcuc bfca bffl bhca bhcc bhff bhuu blaa blab blac blah blau blcu blfc blub bluf bual buba bubb bubu buca bucc buch bucu bufc buff buha buhl bula bulb bull bulu caaa caab caac caaf caah caal caba cabf cabu cac- caca cacc cach cafa cafb cafc caff cafl cafu caha cahl cala calc calf call calu cauc cauf caul cbac cbal cbbc cbca cbcc cbcl cbcu cbfb cbfc cbha cbhl cblb cblc ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf cccl cccu ccfa ccfc ccff ccfl ccha cchl ccla cclc ccuc cfaa cfab cfac cfbc cfca cfcb cfcf cfcl cffb chaa chab chac chaf chah chal chau chca chch chfa chfc chha chlc chua chub chul clab claf clau club cluh cuau cub- cuba cubb cuca cucc cufa cufc cuff cula culb culc cull faaa faac faah faba fabu faca facc fach fafa fafc faff faha fala falc fall falu faul fbla fcab fcal fcba fcca fccf fcch ffcc ffff fhlb flab flac flcl flub fluf fubb fubu fuc- fuca fufc fuff fufu fula full fulu haab haaf haal haba habu hafb haff haha hal- hala halb half hall halu hau- hauf haul hbfc hcbc hcca hccb hccc hcch hcfa hcfc hfba hhaa hhcl hhhh hhla hlah hlul huac huah huba hubb hubl huch hucu hufc huff hufu huhu hula hulc hull hulu huub laaa laac laal laba labu laca lacc lach lacl lacu lafb lafc laff laha lahu lala lall lalu laub lauf laul lbcc lcac lcbc lcca lccc lcfc lchc lfca lfcc lhau lhhh llcc lllc llll luah luau luba luca luch luff lufu luhu lula lull lulu luua uabc uaca uafa uaua ubac ubal ubba ubla ucal ucbc ucca ucfa ucfb ucha ucla ucua ufcu uffa uhcl uhuh ulaa ulbc ulcc ulch ulla ulua ulul uulu uuuu