a-a a-b aaa aab aad aaf aao aar aau ab- aba abb abd abf abo abr abu ad- ada adb add adf ado adr adu af- afa afb afd aff afo afr afu aoa aob aod aof aoo aor aou ar- ara arb ard arf aro arr aru au- aua aub aud auf auo aur b-u baa bab bad baf bao bar bau bba bbb bbd bbf bbo bbr bbu bda bdb bdd bdf bdo bdr bdu bfa bfb bfd bff bfo bfr bfu boa bob bod bof boo bor bou bra brb brd brf bro brr bru bua bub bud buf buo bur buu daa dab dad daf dao dar dau dba dbb dbd dbf dbo dbr dbu dda ddb ddd ddf ddo ddr ddu dfa dfb dfd dff dfo dfr dfu doa dob dod dof doo dor dou dra drb drd dro drr dru dua dub dud duf duo dur faa fab fad faf fao far fau fba fbb fbd fbf fbo fbr fbu fda fdb fdd fdf fdo fdr fdu ffa ffd fff ffo ffr ffu foa fob fof foo for fou fra frb frd frf fro frr fru fua fub fud fuf fuo fur fuu oaa oab oad oaf oao oar oau ob- oba obb obd obf obo obr obu oda odb odd odf odo odr odu of- ofa ofb ofd off ofo ofr ofu oo- ooa oob ood oof ooo oor or- ora orb ord orf oro orr oru ou- oua oud ouf ouo our ra- raa rab rad raf rao rar rau rba rbb rbd rbf rbo rbr rbu rda rdb rdd rdf rdo rdr rdu rfa rfb rfd rff rfo rfr rfu roa rob rod rof roo ror rou rra rrb rrd rrf rrr rru rua rub rud ruf ruo rur ruu ua- uaa uab uad uaf uao uar uau uba ubb ubf ubo ubr ubu uda udb udd udf udo udr udu ufa ufd uff ufo ufr ufu uoa uob uod uoo uor ur- ura urb urd urf uro urr uru uua uur uuu

a-do a-fu aaaa aaab aaad aaaf aaar aaba aabb aabd aada aadu aafa aafb aafd aaff aaoo aara aard aaro aaru abaa abab abad abaf abar abau abb- abba abbb abbo abbr abda abdo abdu abff aboa abob abod abof aboo abor abou abra abro abua abud abuf adaa adab adad adao adar adba adda addd addo addr addu adfa adob adod adoo ador adra adro adua adub adur afaa afad afao afar afdb affa affo afoa afoo afor afr- afra afro afru afua afud aoba aora aorb aouf arab arad araf arar arau arba arda ardf ardo ardu arfa arfb arff arfu aroa arob arod aroo aror arr- arra arro arrr arru arua arub arud auaa audo aur- aura aurd auro baaa baad baaf baar baba babb babo babr babu bada badb badd bado badr badu baff bafo bar- bara barb bard barf baro barr baru bau- baud bauf baur bbad bbau bbbb bbdd bbdo bd-r bduf boab boad boar boba bobb bobo bobu boda bodb bodo bodu bofa bofd boff bofu boob bood boof boor bor- bora bord borf boro borr boru boua boud bouf bour brab brad braf brao brau brda brdo brfu broa brob brod broo bror brou brrr brud buad buar buba bubb bubo bubu buda budb budd budo budu buff bufo bufr bur- bura burb burd buro burr buru d-bo daab daad daar daau daba dabb dabo dabu dada dado dadu dafa daff dafo daou dara darb dard darf daro darr daru daub daud daur dbar dbfo dddd ddub dfaf dffa dfrf doab doar doba dobb dobu dod- doda dodd dodo doff doob dood doof door dora dord dorf doro dorr doru doub doud douf dour draa drab drad draf drar drau drba drda drob drod drof drou drra drua drub druu duaa duab duad duar dub- duba dubb dubu duda dudd dudo dudu duff dufu duo- dura duro duru duur faaa faad faba fabd fabo fabu fada fadd fado fafa faff fafo fara farb fard faro farr faru faud faur fbar fdoa ffar ffff ffrr foad foaf foar foba foda fofo food foof for- fora forb ford foro forr foua foud four frab frad frau frob frou frub fuad fuar fubb fubu fuda fudd fuff fufu fuor fur- fura furo furr oaau oafo oara obad obba obbo obor obra obro odbo odda oddd odoo odor odou odra odur ofdr off- offa offo offr offu ofor ofra ooaa ooba ooda ooff oooo oora oord orab orad orao orar orba orbb orbo orbu orda ordo ordu orff orfu oro- orof oror orra orro orub ouad ouff our- oura ouro ouu- raab raad raaf raba rabb rabo rabu rada radd rado radr radu rafa raff raob rara rarb rarf raro raua raub raud rauf rbaf rbbb rbbr rdfa roab road roaf roar rob- roba robb robo robu roda rodd rodo roff rofo roob rood roof roor rora roro roru roua roub roud rouf rrad rrrr ruad ruba rubb rubu ruda rudd rudo rufa ruff rufo rura rurd ruro ruru ruud uafa uaru uaua ubar ubba ubbo ubod ubra ubud udaa udad udar udau udoo udra uffa ufra uofa uofo uor- urad urao urau urba urda urdu urfa urff uro- uroa uroo urra urur uuuu

-aaa- -abad aabaa aabba aabra aarau abaab ababa ababu abada abara abaru abbad abbar abbod abbou abbud abbur abfab aboab aboad abobo abood abora abord aboud abrad abrar abrod abrud abuda abura aburr adaba adada adado adaou adara adaro addra addur adoar adobo adodb adoor adora adorf adoro adoub adour adrad adrar adroa aduba afara affor afoou afro- afrob aouda ar-ab arab- araba arabo arada arado arafo arara araru arbab arbar arbor ardab ardod ardor ardra ardua ardud aroab aroad aroar aroba aroof aroor arora arrau arrou arrua aruaa aruba arufo arura aruru aubad audad audra audru aurad aurar auro- auroa auror aurra baard babar babau babdo baboo babou babra babur badao badar baddo badod badoo badou badra badur baffa