a-fu aaaa aaac aaaf aaal aaca aacc aacf aacl aaco aacu aafa aafc aaff aafl aala aalc aall aalo aalu aaoo acaa acac acca accc accf acco accu acfc acfl acla aclc aclu acoa acol acou acu- acuf acul acuo afaa afao afca afcc afcu affa affc affo afla aflc afoa afol afoo afua alaa alac alal alao alau alca alcc alco alfa all- alla alll allo allu aloa aloc alof alol aloo alou alua aluf aoca aola aouf aoul auaa auca aufc aul- aula aulf aull aulo aulu auol caaa caac caaf caal cac- caca cacc caco cafa cafc caff cafl cafu cala calc calf call calo calu caol cauc cauf caul cauo ccaa ccac ccaf ccca cccc cccf cccl cccu ccfa ccfc ccff ccfl ccla cclc ccoc ccuc cfaa cfac cfao cfca cfcf cfcl cfco cfoa claf clau clof cloo clou coal coca coco cocu cofc coff col- cola coll colo colu coof cool coua coul cuau cuca cucc cufa cufc cuff cufo cula culc cull culo faaa faac faca facc fafa fafc faff fafo fala falc fall falo falu faul fcal fcca fccf ffcc ffff flac flao flcl floc floo flou fluf fluo foaf foal foca foco fofo fola folc foll folo foof fool foua foul fuc- fuca fufc fuff fufu fula full fulu laaa laac laal laca lacc lacl laco lacu lafc laff lala lall lalo lalu laou lauf laul lcac lcca lccc lcfc lfca lfcc llao llcc lllc llll lloa lloc lloo loac loaf loca locc loco locu lofa loff lola loll lolo looc loof lool loul louu luau luca luff lufu lula lull lulu luua oaau oafc oafo oall ocac ocal occa occc ocfa oclc ocul ofcl off- offa offc offo offu ofla olac olaf olca olcc olfa olla ollo olof ooaa ooff oola oolo oooo ouac oucc oufc ouff oula oulu ouu- uaca uafa uaoc uaua ucal ucca ucfa ucla ucua ufcu uffa ulaa ulcc ulco ulla ullo ulo- uloc ulua ulul uocc uofa uofl uofo uolc uulu uuoc uuuu