a-a a-b aaa aab aaf aao aar aau ab- aba abb abf abo abr abu af- afa afb aff afo afr afu aoa aob aof aoo aor aou ar- ara arb arf aro arr aru au- aua aub auf auo aur b-u baa bab baf bao bar bau bba bbb bbf bbo bbr bbu bfa bfb bff bfo bfr bfu boa bob bof boo bor bou bra brb brf bro brr bru bua bub buf buo bur buu faa fab faf fao far fau fba fbb fbf fbo fbr fbu ffa fff ffo ffr ffu foa fob fof foo for fou fra frb frf fro frr fru fua fub fuf fuo fur fuu oaa oab oaf oao oar oau ob- oba obb obf obo obr obu of- ofa ofb off ofo ofr ofu oo- ooa oob oof ooo oor or- ora orb orf oro orr oru ou- oua ouf ouo our ra- raa rab raf rao rar rau rba rbb rbf rbo rbr rbu rfa rfb rff rfo rfr rfu roa rob rof roo ror rou rra rrb rrf rrr rru rua rub ruf ruo rur ruu ua- uaa uab uaf uao uar uau uba ubb ubf ubo ubr ubu ufa uff ufo ufr ufu uoa uob uoo uor ur- ura urb urf uro urr uru uua uur uuu

a-fu aaaa aaab aaaf aaar aaba aabb aafa aafb aaff aaoo aara aaro aaru abaa abab abaf abar abau abb- abba abbb abbo abbr abff aboa abob abof aboo abor abou abra abro abua abuf afaa afao afar affa affo afoa afoo afor afr- afra afro afru afua aoba aora aorb aouf arab araf arar arau arba arfa arfb arff arfu aroa arob aroo aror arr- arra arro arrr arru arua arub auaa aur- aura auro baaa baaf baar baba babb babo babr babu baff bafo bar- bara barb barf baro barr baru bau- bauf baur bbau bbbb boab boar boba bobb bobo bobu bofa boff bofu boob boof boor bor- bora borf boro borr boru boua bouf bour brab braf brao brau brfu broa brob broo bror brou brrr buar buba bubb bubo bubu buff bufo bufr bur- bura burb buro burr buru faaa faba fabo fabu fafa faff fafo fara farb faro farr faru faur fbar ffar ffff ffrr foaf foar foba fofo foof for- fora forb foro forr foua four frab frau frob frou frub fuar fubb fubu fuff fufu fuor fur- fura furo furr oaau oafo oara obba obbo obor obra obro off- offa offo offr offu ofor ofra ooaa ooba ooff oooo oora orab 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 raob rara rarb rarf raro raua raub rauf rbaf rbbb rbbr roab roaf roar rob- roba robb robo robu roff rofo roob roof roor rora roro roru roua roub rouf rrrr ruba rubb rubu rufa ruff rufo rura ruro ruru uafa uaru uaua ubar ubba ubbo ubra uffa ufra uofa uofo uor- urao urau urba urfa urff uro- uroa uroo urra urur uuuu

-aaa- aabaa aabba aabra aarau abaab ababa ababu abara abaru abbar abbou abbur abfab aboab abobo abora abrar abura aburr afara affor afoou afro- afrob ar-ab arab- araba arabo arafo arara araru arbab arbar arbor aroab aroar aroba aroof aroor arora arrau arrou arrua aruaa aruba arufo arura aruru aurar auro- auroa auror aurra babar babau baboo babou babra babur baffa bafou bafra baoro baraa barab barao barar barba barbu barff baro- baroa barof baroo baror barra barro barru barua baubo baura bauru bo-bo boaro bobar bobr boffa boffo booba boora booru borau borba borbo boro- boroa boroo borou borra borro bouar bouba boura braff brobo brora brrar brrrr bruff bubba buffa buffo buraa burao buroo burra burro burru faafu fabbo faboo fabor fabra fabro faora farab farao farau farbo farfa farob faroo farro faura fobar fofao for-a forra forro forua forur fourb fouro fraba fu-fu fubar furbo furo- furor o-r-b oaror obaba obara obora oboro obrab ofafa offof ofora ofour ooooo oraba orara orfar orfor orobo oroua oruro ouara ouoro ourba ra-ra raaba raaff raaor rabab rabba rabor rabou rafar raffa raouf raraf ro-ro robab robar robbo robo- robor robur roffa rofor rooba rorbu rorra rouba roura rubab rubba rubof rubor rubra ruffo rufo- uaroo ubobo ufofu uforb uraba urbar uroob urour urrao urubu uuuuu

aaaaba aabroo ababou abaroa abburu abobra abrafo afu-ra aourou araafa arabo- ararao araua araura arbour arbra arfara arfarf aroura arraba arroba arrour aruaru aufbau aufruf aurora baabaa baabar baarbu baaror babbar baboua babrru babura bafaro bafour baobab bar-or barara barbar barbra barbro barrou baruar baufra bauour baurua bbbbbb boabab bobara bobbar bobbau booboo borbor bororo boubou bourou bourra braura brubru bububu burbur fabao fabara fabbro fabour faraar farara farfar farofa faroff farrar foboff foobar foofoo foofur forbar forbra forfar foufou fourof fourou frafra frbroo fufuao furfur furour furrfu obubra oooooo orbaff orbara orrour raabau rababa rabuor rorbua rubarb rubbra ruboff rubro- ubauro uruara

abofour afourar arafura araroba arbaoua arrorro baabarr baffour baraboo barabra barbara barbaro barbora barbour bau-bau bbbbbbb bobbarr boo-boo boorara borarou bouarfa bourrou buffbar burarra buruuba fabfour far-off farfara foo-foo fou-fou furrour o-o-a-a off-bar off-off oroboro rababoo roboboa roo-bar roobarb rub-off rubaboo rubbour ububboo

bafarara bar-abba barabara barabora bbbbbbbb bo-bo-bo bobaraba borabora borbarua bourouba broubrou bruara bu-ba-bu buruburu four-bar four-oar fourbour froufrou ourrouar rubarabr rubbaboo ubbubboo

abbabubba afro-arab baabaabaa barrabora borborbor four-four frou-frou raouraoua ruff-raff

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