a-a a-b aaa aab aaf aah aao aar aau ab- aba abb abf abh abo abr abu af- afa afb aff afh afo afr afu aha ahb ahf ahh aho ahr ahu aoa aob aof aoh aoo aor aou ar- ara arb arf arh aro arr aru au- aua aub auf auh auo aur b-u baa bab baf bah bao bar bau bba bbb bbf bbh bbo bbr bbu bfa bfb bff bfh bfo bfr bfu bha bhb bhf bhh bho bhr bhu boa bob bof boh boo bor bou bra brb brf brh bro brr bru bua bub buf buh buo bur buu faa fab faf fah fao far fau fba fbb fbf fbh fbo fbr fbu ffa fff ffh ffo ffr ffu fha fhb fhf fhh fho fhr foa fob fof foh foo for fou fra frb frf frh fro frr fru fua fub fuf fuo fur fuu haa hab haf hah hao har hau hba hbb hbf hbh hbo hbr hbu hfa hfb hff hfh hfo hfr hfu hha hhb hhf hhh hho hhr hhu hoa hob hof hoh hoo hor hou hr- hra hrb hrf hrh hro hrr hru hua hub huf huh huo hur huu oaa oab oaf oah oao oar oau ob- oba obb obf obh obo obr obu of- ofa ofb off ofo ofr ofu oha ohf ohh oho ohr ohu oo- ooa oob oof ooh ooo oor or- ora orb orf orh oro orr oru ou- oua ouf ouh ouo our ra- raa rab raf rah rao rar rau rba rbb rbf rbh rbo rbr rbu rfa rfb rff rfh rfo rfr rfu rh- rha rhb rhf rhh rho rhr rhu roa rob rof roh roo ror rou rra rrb rrf rrh rrr rru rua rub ruf ruh ruo rur ruu ua- uaa uab uaf uah uao uar uau uba ubb ubf ubh ubo ubr ubu ufa uff ufh ufo ufr ufu uha uhb uhf uhh uho uhr uhu uoa uob uoo uor ur- ura urb urf uro urr uru uua uur uuu

-hou a-fu a-ha aaaa aaab aaaf aaah aaar aaba aabb aabh aafa aafb aaff aaha aaoo aara aaro aaru abaa abab abaf abar abau abb- abba abbb abbo abbr abff abha abho abhr aboa abob abof aboh aboo abor abou abra abro abua abuf afaa afao afar affa affo afoa afoo afor afr- afra afro afru afua ahab ahah ahar ahau ahfa ahha ahoa ahor ahra ahrr ahua aoah aoba aora aorb aouf arab araf arah arar arau arba arbh arfa arfb arff arfu arh- aroa arob aroo aror arr- arra arrh arro arrr arru arua arub auaa aur- aura auro baaa baaf baah baar baba babb babo babr babu baff bafo baha baho bahr bahu baoh bar- bara barb barf barh baro barr baru bau- bauf baur bbau bbbb bhao bhar bhff bhor bhra bhur bhuu boab boar boba bobb bobo bobu bofa boff bofh bofu boha boho bohr bohu boob boof booh boor bor- bora borf borh boro borr boru boua bouf bouh bour brab braf brah brao brau brfu broa brob broh broo bror brou brrr bruh buar buba bubb bubo bubu buff bufo bufr buha buho buhr bur- bura burb burh buro burr buru faaa faah faba fabo fabu fafa faff fafo faha fahr fara farb faro farr faru faur fbar ffar ffff ffrr foaf foar foba fofo fohr foof for- fora forb foro forr foua four frab frau frob froh frou frub fuar fubb fubu fuff fufu fuor fur- fura furo furr haab haaf haar haba habo habu hafb haff haha haho haor hara harf harh haro harr haru hau- hauf hbar hfba hhaa hhhh hhof hoar hoba hobo hoff hofu hoha hoho hoof hoor hora horo horr houf hour hrob huah huba hubb hubo huff hufu huhu huor hura huro hurr huru huub oaau oafo oahu oara obba obbo obor obra obrh obro obuh ofah off- offa offh offo offr offu ofor ofra ohau ohba ohho ohob ohoh ohra ooaa ooba ooff ooha ooho oooh oooo oora orab orah orao orar orba orbb orbo orbu orff orfu oro- orof oror orra orro orub ouff our- oura ouro ouu- raab raaf raba rabb rabo rabu rafa raff raha rahr rahu raob raoh rara rarb rarf raro raua raub rauf rbaf rbbb rbbr rboh rhau rhoa rhob rhoh roab roaf roar rob- roba robb robo robu roff rofo roha rohr rohu roob roof roor rora roro roru roua roub rouf rouh rrah rrrr ruah ruba rubb rubu rufa ruff rufo ruhh ruhr rura ruro ruru uafa uaru uaua ubar ubba ubbo ubra uffa ufra uhoh uhuh uofa uofo uor- urao urau urba urfa urff urho uro- uroa uroo urra urrh urur uuuu

-aaa- aaaah aabaa aabba aabra aahaa aarah aarau aaroh abaab ababa ababu abara abaru abbar abbou abbur abfab abhar abhor aboab abobo aboha abora abrar abura aburr afara affor afoou afrah afro- afrob ahafo ahhaa ahhha ahoah ahora ahrab ahrar ahura ahuru ar-ab arab- araba arabo arafo arara araru arbab arbar arbor arhar aroab aroar aroba aroha aroof aroor arora arrah arrau arrha arrou arrua aruaa aruba arufo arura aruru aurar auro- auroa auror aurra babar babau baboo babou babra babur baffa bafou bafra bahar bahau bahor bahra bahua bahur baobh baoro baraa barab barao barar barba barbu barff barha baro- baroa barof baroo baror barra barro barru barua baubo baura bauru bhara bhaur bhora bhour bo-bo bo-ho boaro bobar bobr boffa boffo bohor bohra booba boora booru borah borau borba borbo boro- boroa boroo borou borra borro bouar bouba boura braff brobo broha brora brrar brrrr bruff bubba buffa buffo buoho buraa burah burao buroo burra burro burru faafu fabbo faboo fabor fabra fabro faora farab farah farao farau farbo farfa farha farhh farob faroo farro faura fobar fofao for-a forah forra forro forua foruh forur fourb fourh fouro fraba froha fu-fu fubar fuhah fuhao fuhua furah furbo furo- furor h-bar ha-ha habab habba habbo habra habro habru hafar haffa hafu hahha