a-a a-b a-c aaa aab aac aaf aah aao aau ab- aba abb abc abf abh abo abu ac- aca acb acc acf ach aco acu af- afa afb afc aff afh afo afu aha ahb ahc ahf ahh aho ahu aoa aob aoc aof aoh aoo aou au- aua aub auc auf auh auo b-u baa bab bac baf bah bao bau bba bbb bbc bbf bbh bbo bbu bca bcb bcc bcf bch bco bcu bfa bfb bfc bff bfh bfo bfu bha bhb bhc bhf bhh bho bhu boa bob boc bof boh boo bou bua bub buc buf buh buo buu c-- caa cab cac caf cah cao cau cba cbb cbc cbf cbh cbo cbu cca ccb ccc ccf cch cco ccu cfa cfb cfc cff cfh cfo cfu ch- cha chb chc chf chh cho chu co- coa cob coc cof coh coo cou cua cub cuc cuf cuh cuo cuu faa fab fac faf fah fao fau fba fbb fbc fbf fbh fbo fbu fca fcb fcc fcf fco fcu ffa ffc fff ffh ffo ffu fha fhb fhc fhf fhh fho foa fob foc fof foh foo fou fua fub fuf fuo fuu haa hab hac haf hah hao hau hba hbb hbc hbf hbh hbo hbu hca hcb hcc hcf hch hco hfa hfb hfc hff hfh hfo hfu hha hhb hhc hhf hhh hho hhu hoa hob hoc hof hoh hoo hou hua hub huc huf huh huo huu oaa oab oac oaf oah oao oau ob- oba obb obc obf obh obo obu oc- oca ocb occ ocf och oco ocu of- ofa ofb ofc off ofo ofu oha ohc ohf ohh oho ohu oo- ooa oob ooc oof ooh ooo ou- oua ouc ouf ouh ouo ua- uaa uab uac uaf uah uao uau uba ubb ubc ubf ubh ubo ubu uca ucb ucc ucf uch uco ucu ufa ufc uff ufh ufo ufu uha uhb uhc uhf uhh uho uhu uoa uob uoc uoo uua uuc uuu

-hou a-fu a-ha aaaa aaab aaac aaaf aaah aaba aabb aabc aabh aaca aacb aacc aacf aach aaco aacu aafa aafb aafc aaff aaha aaoo abaa abab abac abaf abau abb- abba abbb abbo abca abcb abcc abcf abch abff abha abho aboa abob abof aboh aboo abou abua abuf acaa acab acac acba acca accc accf acch acco accu acfc acha achh acho achu acoa acoh acou acu- acuf acuo afaa afao afca afcb afcc afch afcu affa affc affo afoa afoo afua ahab ahac ahah ahau ahfa ahha ahoa ahua aoah aoba aoca aouf auaa auca auch aufc baaa baaf baah baba babb babo babu bac- baca bacc bach baco bafc baff bafo baha baho bahu baoh bau- bauf bbau bbbb bbch bbfc bcaa bcbc bcca bccc bcfc bcof bcuc bfca bhao bhca bhcc bhff bhuu boab boac boba bobb bobo bobu boca boch boco bocu bofa boff bofh bofu boha boho bohu boob booc boof booh boua bouf bouh buba bubb bubo bubu buca bucc buch buco bucu bufc buff bufo buha buho c-bo caaa caab caac caaf caah caba cabf cabo cabu cac- caca cacc cach caco cafa cafb cafc caff cafu caha cauc cauf cauo cbac cbbc cbca cbcc cbcu cbfb cbfc cbha ccaa ccab ccac ccaf ccba ccbc ccca cccb cccc cccf cccu ccfa ccfc ccff ccha ccob ccoc ccuc cfaa cfab cfac cfao cfbc cfca cfcb cfcf cfco cffb cfoa chaa chab chac chaf chah chao chau chca chch chfa chfc chha choc choh choo chou chua chub coba cobb cobh cobo cobu coca coch coco cocu cofc coff coha coho coob coof cooh coua coub cuau cub- cuba cubb cuca cucc cufa cufc cuff cufo faaa faac faah faba fabo fabu faca facc fach fafa fafc faff fafo faha fcab fcba fcca fccf fcch ffcc ffff foaf foba foca foch foco fofo foof foua fubb fubu fuc- fuca fufc fuff fufu haab haaf haba habo habu haco hafb haff haha haho hau- hauf hbfc hboc hcbc hcca hccb hccc hcch hcfa hcfc hfba hhaa hhhh hhof hoac hoba hobo hoca hoch hoff hofu hoha hoho hoof houf huac huah huba hubb hubo huch hucu hufc huff hufu huhu huub oaau oafc oafo oahu obba obbo obuh ocab ocac ocbc occa occc ocfa ocha ofah off- offa offc offh offo offu ohau ohba ohcc ohho ohob ohoh ooaa ooba ooff ooha ooho oooh oooo ouac oucc ouch oufc ouff ouu- uabc uaca uafa uaoc uaua ubac ubba ubbo uboc ucbc ucca ucfa ucfb ucha ucho ucua ufcu uffa uhoh uhuh uocc uofa uofo uuoc uuuu

-aaa- aaaah aaaoc aabaa aabba aacbc aacfo aahaa abaab ababa ababu abaca abaco abbac abbou abccc abcho abfab aboab abobo aboha acaca acacb acaua accho accub achab achao achau achoo achua acou- acoua acouo acuba acuff afoou ahafo ahhaa ahhha ahoah aucha babau baboo babou bacab bacao bacca bacco bacha bacu baffa bafou bahau bahco bahua baobh baubo bauch bo-bo bo-ho boaco bobac boboc bocac bocao bocca bocha bocho bocoa boffa boffo booba booch booco bouba bouca bouch bubba bucca bucco bucha bucho buchu buffa buffo buoch buoho c-a-c ca-ca caaba cabob caboc cacao cacau cacha caco- cacoa cacu caffa caffo cahch caoba cauac cauca cauch cauco cauff ccccc cfhof chaab chaac chaah chaba chaca chach chaco chafa chaff chahu chauf chhab chhau choba choca choco chofa choff choof chuao chuba chubb chufa chuff co-bo co-co coach cocao cocc- cocco cocha cocoa coffa cohab cohob cohoo cooba cooch couac couba couch couco cuaba cubao cubo- cubub cufca cuoco faafu fabbo faboo fauch fcaca fofao fouch fu-fu fucha fuchu fuco- fuhah fuhao fuhua fuoco h-cho ha-ha habab habba habbo hacha haffa hafu hahha hauch hauff hauho hcooh hhhhh ho-ho ho-oh hobab hobah hobba hobub hocco hoffa hofuf hooah hooch hooha houch houff huaca huaco hubba hucch hucho huffa huhuh obaba ochoa ofafa offof oh-oh ohaba ohfoo ohoba ooooh ooooo oucho ubach ubobo uchoa uchuu ufofu uh-oh uh-uh uhhoh uhhuh