a-a a-b aaa aab aaf aag aao aar aau ab- aba abb abf abg abo abr abu af- afa afb aff afg afo afr afu ag- aga agb agf agg ago agr agu aoa aob aof aog aoo aor aou ar- ara arb arf arg aro arr aru au- aua aub auf aug auo aur b-u baa bab baf bag bao bar bau bba bbb bbf bbg bbo bbr bbu bfa bfb bff bfg bfo bfr bfu bga bgb bgf bgg bgo bgr bgu boa bob bof bog boo bor bou bra brb brf brg bro brr bru bua bub buf bug buo bur buu faa fab faf fag fao far fau fba fbb fbf fbg fbo fbr fbu ffa fff ffg ffo ffr ffu fga fgb fgf fgg fgr foa fob fof fog foo for fou fra frb frf frg fro frr fru fua fub fuf fug fuo fur fuu gaa gab gaf gag gao gar gau gba gbf gbg gbo gbr gbu gfa gfb gff gfo gfr gga ggb ggg ggo ggr ggu goa gob gof gog goo gor gou gra grb grf grg gro grr gru gu- gua gub guf gug guo gur guu oaa oab oaf oag oao oar oau ob- oba obb obf obg obo obr obu of- ofa ofb off ofg ofo ofr ofu oga ogf ogg ogo oo- ooa oob oof oog ooo oor or- ora orb orf org oro orr oru ou- oua ouf ouo our ra- raa rab raf rag rao rar rau rba rbb rbf rbg rbo rbr rbu rfa rfb rff rfg rfo rfr rfu rga rgb rgf rgg rgo rgr roa rob rof rog roo ror rou rra rrb rrf rrg rrr rru rua rub ruf rug ruo rur ruu ua- uaa uab uaf uag uao uar uau uba ubb ubf ubg ubo ubr ubu ufa uff ufg ufo ufr ufu uga ugb ugf ugg ugo ugr ugu uoa uob uog uoo uor ur- ura urb urf urg uro urr uru uua uug uur uuu

a-fu aaaa aaab aaaf aaar aaba aabb aafa aafb aaff aaoo aara aaro aaru abaa abab abaf abag abar abau abb- abba abbb abbo abbr abff aboa abob abof aboo abor abou abra abro abua abuf abug afaa afao afar affa affo afgf afoa afog afoo afor afr- afra afro afru afua ag-o agag agao agar agau agba agbo agfa agga aggu agob agog agoo agou agra agro agua agur aoba aora aorb aouf arab araf arag arar arau arba arfa arfb arff arfu arga argb argo aroa arob aroo aror arr- arra arrg arro arrr arru arua arub arug auaa auga aur- aura auro auug baaa baaf baar baba babb babo babr babu baff bafo baga bagg bago bar- bara barb barf barg baro barr baru bau- bauf baug baur bbau bbbb bbga bbrg bfgf boab boag boar boba bobb bobo bobu bofa boff bofu boga bogg bogo boob boof boog boor bor- bora borf borg boro borr boru boua bouf bour brab braf brag brao brau brfu broa brob brog broo bror brou brrr brug buar buba bubb bubo bubu buff bufo bufr buga bugg bugo bur- bura burb burg buro burr buru faaa faba fabo fabu fafa faff fafg fafo fagg fago fagu fara farb farg faro farr faru faur fbar ffar ffff ffrr foaf foar foba fofo fogg fogo foof for- fora forb forg foro forr foua foug four frab frag frau frob frog frou frub frug fuar fubb fubu fuff fufu fuga fugo fugu fuor fur- fura furg furo furr gaar gaba gabb gabo gabr gabu gafa gafb gaff gaga gagg gago gagu gara garb garf garg garo garr gaua gaub gaur gbag gbbo gffa gfoa gfor ggfg gggg goaf goar goba gobo goff gofr gofu goga gogo goof goog goor gora gorb gorf gorg goro gorr gou- gouf goug gour grab graf grau grbr grfa grob grof grog groo gror grou grrr grua grub gruf grug grur guaa guag guao guar guba gubb gubu gufa guff guga gugb gugg gugu gura gurb gurg guro gurr guru oaau oafo oara obba obbo obor obra obro off- offa offo offr offu ofgo ofor ofra ogar ogb ogba ogfr ogoa ogog ogou ogra ogro ooaa ooba ooff oooo oora orab orao orar orba orbb orbo orbu orff orfu orga orgo oro- orof oror orra orro orub ouff our- oura ouro ouu- raab raaf raag raba rabb rabo rabu rafa raff raga ragg rago ragu raob rara rarb rarf raro raua raub rauf rbaf rbbb rbbr rgba roab roaf roag roar rob- roba robb robo robu roff rofo roga rogg rogo roob roof roog roor rora roro roru roua roub rouf rrrr ruag ruba rubb rubu rufa ruff rufo ruga rugg rura ruro ruru uafa uaru uaua ubar ubba ubbo ubra ufag uffa ufra ugab ugao ugar uggo ugra ugro ugur uguu uofa uofg uofo uor- urao urau urba urfa urff urga urgu uro- uroa uroo urra urur uuuu

-aaa- aaarg aabaa aabba aabga aabra aarau abaab ababa ababu abaga abago abara abaru abbar abbou abbur abfab abgar aboab abobo abora abrar abura aburr afara affor afgar afoou afro- afrob afrog agafa agago agara agaro agbor aggag aggar aggro agogo agoof agora agoua agro- agror aguar agufo agura aooga ar-ab arab- araba arabo arafo arago arara araru arbab arbar arbor aroab aroar aroba aroga aroof aroor arora arrau arrou arrua aruaa aruba arufo arura aruru augur aurar auro- auroa auror aurra babar babau baboo babou babra babur baffa bafou bafra bagag bagao bagar bagga bagof bagor bagou bagra bagru bagua baoro baraa barab barag barao barar barba barbu barff barga baro- baroa barof barog baroo baror barra barro barru barua baubo baura bauru bfrog bo-bo boaro bobar bobr boffa boffo bogar bogga bogof bogor bogra bogu bogur booba boora booru borau borba borbo borga borgo borgu boro- boroa boroo borou borra borro bouar bouba boura bourg braff braga bragb bragg brobo broga brora brrar brrrr bruff brugg bubba buffa buffo bugab