a-a a-b aaa aab aad aaf aan aao aar aau ab- aba abb abd abf abn abo abr abu ad- ada adb add adf adn ado adr adu af- afa afb afd aff afn afo afr afu an- ana anb and anf ann ano anr anu aoa aob aod aof aon aoo aor aou ar- ara arb ard arf arn aro arr aru au- aua aub aud auf aun auo aur b-u baa bab bad baf ban bao bar bau bba bbb bbd bbf bbn bbo bbr bbu bda bdb bdd bdf bdo bdr bdu bfa bfb bfd bff bfn bfo bfr bfu bna bnb bnd bnf bnn bno bnr bnu boa bob bod bof bon boo bor bou bra brb brd brf brn bro brr bru bua bub bud buf bun buo bur buu daa dab dad daf dan dao dar dau dba dbb dbd dbf dbn dbo dbr dbu dda ddb ddd ddf ddn ddo ddr ddu dfa dfb dfd dff dfn dfo dfr dfu dna dnb dnd dnf dnn dno dnr doa dob dod dof don doo dor dou dra drb drd drn dro drr dru dua dub dud duf dun duo dur faa fab fad faf fan fao far fau fba fbb fbd fbf fbn fbo fbr fbu fda fdb fdd fdf fdn fdo fdr fdu ffa ffd fff ffn ffo ffr ffu fna fnb fnd fnf fnn fnr fnu foa fob fof fon foo for fou fra frb frd frf frn fro frr fru fua fub fud fuf fun fuo fur fuu naa nab nad naf nan nao nar nau nba nbb nbd nbf nbn nbo nbr nbu nda ndb ndd ndf ndn ndo ndr ndu nfa nfb nfd nff nfn nfo nfr nfu nna nnb nnf nnn nno nnu no- noa nob nod nof non noo nor nou nra nrb nrd nrf nrn nro nrr nru nua nub nud nun nuo nur nuu oaa oab oad oaf oan oao oar oau ob- oba obb obd obf obn obo obr obu oda odb odd odf odn odo odr odu of- ofa ofb ofd off ofn ofo ofr ofu on- ona onb ond onf onn ono onr onu oo- ooa oob ood oof oon ooo oor or- ora orb ord orf orn oro orr oru ou- oua oud ouf oun ouo our ra- raa rab rad raf ran rao rar rau rba rbb rbd rbf rbn rbo rbr rbu rda rdb rdd rdf rdn rdo rdr rdu rfa rfb rfd rff rfn rfo rfr rfu rna rnb rnd rnn rno rnr rnu roa rob rod rof ron roo ror rou rra rrb rrd rrf rrn rrr rru rua rub rud ruf run ruo rur ruu ua- uaa uab uad uaf uan uao uar uau uba ubb ubf ubn ubo ubr ubu uda udb udd udf udn udo udr udu ufa ufd uff ufn ufo ufr ufu un- una unb und unf unn uno unr unu uoa uob uod uon uoo uor ur- ura urb urd urf urn uro urr uru uua uun uur uuu

-ana a-do a-fu a-un aaaa aaab aaad aaaf aaan aaar aaba aabb aabd aada aadu aafa aafb aafd aaff aana aand aaon aaoo aara aard aaro aaru abaa abab abad abaf aban abar abau abb- abba abbb abbo abbr abda abdo abdu abff abnu aboa abob abod abof abon aboo abor abou abra abro abua abud abuf abun adaa adab adad adan adao adar adba adda addd addn addo addr addu adfa adna adob adod adon adoo ador adra adro adua adub adun adur afaa afad afan afao afar afdb affa affo afoa afoo afor afr- afra afro afru afua afud ana- anaa anab anad anan anao anar anau anba anbb anbo anbu and- anda ando andr anfa anfo anna annb anno ano- anoa anod anon anor anua anub anuf anun aoba aonb aono aora aorb aorn aouf aoun arab arad araf aran arar arau arba arda ardf ardo ardu arfa arfb arff arfu arna arnd arno aroa arob arod aron aroo aror arr- arra arro arrr arru arua arub arud arun auaa audo auna aur- aura aurd auro baaa baad baaf baan baar baba babb babo babr babu bada badb badd bado badr badu baff bafo bana band bann bano banr banu baon bar- bara barb bard barf barn baro barr baru bau- baud bauf baur bbad bbau bbbb bbdd bbdo bbfn bd-r bdna bduf bnor bnrr boab boad boan boar boba bobb bobo bobu boda bodb bodo bodu bofa bofd boff bofu bona bond bonn bono bonu boob bood boof boon boor bor- bora bord borf born boro borr boru boua boud bouf boun bour brab brad braf bran brao brau brda brdo brfu brna brno broa brob brod bron broo bror brou brrr brud brun buad buar buba bubb bubo bubu buda budb budd budo budu buff bufo bufr buna bunb bund bunn buno bunu buon bur- bura burb burd burn buro burr buru d-bo d-na daab daad daan daar daau daba dabb dabo dabu dada dado dadu dafa daff dafo dana dand dann dano danr danu daon daou dara darb dard darf darn daro darr daru daub daud daun daur dbar dbfo dbrn dddd ddub dfaf dffa dfrf dnaa dnab dnad dnan doab doan doar doba dobb dobu dod- doda dodd dodo doff dona dond donn dono donr doob dood doof doon door dora dord dorf dorn doro dorr doru doub doud douf doun dour draa drab drad draf drar drau drba drda drna drno drob drod drof dron drou drra drua drub druu duaa duab duad duan duar dub- duba dubb dubu duda dudd dudo dudu duff dufu duna dunn duno duo- duon dura durn duro duru duur faaa faad faan faba fabd fabo fabu fada fadd fado fafa faff fafo fana fand fano fanu faon fara farb fard faro farr faru faud faun faur fbar fdoa ffar ffff ffrr ffun fnar fndd fndn fndr fnuf foad foaf foan foar foba foda fofo fond fono food foof