-er a-a a-b aaa aab aae aaf aam aao aar aau ab- aba abb abe abf abm abo abr abu aea aeb aee aef aem aeo aer aeu af- afa afb afe aff afm afo afr afu ama amb ame amf amm amo amr amu aoa aob aoe aof aom aoo aor aou ar- ara arb are arf arm aro arr aru au- aua aub aue auf aum auo aur b-u baa bab bae baf bam bao bar bau bba bbb bbe bbf bbm bbo bbr bbu be- bea beb bee bef bem beo ber beu bfa bfb bfe bff bfm bfo bfr bfu bma bmb bme bmf bmm bmo bmr bmu boa bob boe bof bom boo bor bou bra brb bre brf brm bro brr bru bua bub bue buf bum buo bur buu eaa eab eae eaf eam eao ear eau eba ebb ebe ebf ebm ebo ebr ebu eea eeb eee eef eem eeo eer ef- efa efb efe eff efm efo efr em- ema emb eme emf emm emo emr emu eo- eoa eob eoe eof eom eoo eor eou era erb ere erf erm ero err eru eu- eua eub eue euf eur faa fab fae faf fam fao far fau fba fbb fbe fbf fbm fbo fbr fbu fea feb fee fef fem feo fer feu ffa ffe fff ffm ffo ffr ffu fma fmb fme fmf fmm fmo fmr fmu foa fob foe fof fom foo for fou fra frb fre frf frm fro frr fru fua fub fue fuf fum fuo fur fuu m-f m-o m-r maa mab mae maf mam mao mar mau mba mbb mbe mbf mbm mbo mbr mbu mea meb mee mef mem meo mer meu mfa mfb mfe mff mfm mfo mfr mfu mma mmb mme mmf mmm mmo mmr mmu moa mob moe mof mom moo mor mou mra mrb mre mrf mrm mro mrr mru mua mub mue muf mum mur muu oaa oab oae oaf oam oao oar oau ob- oba obb obe obf obm obo obr obu oea oeb oee oef oem oeo oer of- ofa ofb ofe off ofm ofo ofr ofu om- oma omb ome omf omm omo omr omu oo- ooa oob oof oom ooo oor or- ora orb ore orf orm oro orr oru ou- oua oue ouf oum ouo our ra- raa rab rae raf ram rao rar rau rba rbb rbe rbf rbm rbo rbr rbu re- rea reb ree ref rem reo rer reu rfa rfb rfe rff rfm rfo rfr rfu rma rmb rme rmf rmm rmo rmr roa rob roe rof rom roo ror rou rra rrb rrf rrm rrr rru rua rub rue ruf rum ruo rur ruu ua- uaa uab uae uaf uam uao uar uau uba ubb ube ubf ubo ubr ubu uea ueb uee uef uem uer ufa ufe uff ufm ufo ufr ufu um- uma umb ume umf umm umo umr umu uoa uob uoe uom uoo uor ur- ura urb ure urf urm uro urr uru uua uue uum uur uuu

a-be a-fu aaaa aaab aaae aaaf aaam aaar aaba aabb aabm aaea aaem aafa aafb aaff aama aamb aame aamo aamr aaoe aaoo aara aare aarm aaro aaru abaa abab abae abaf abam abar abau abb- abba abbb abbe abbo abbr abee aber abff abma abmb aboa abob abof aboo abor abou abra abro abua abue abuf abum aeaf aeer aeom aer- aera aero afaa afam afao afar afee afer affa affo afma afoa afoe afoo afor afr- afra afre afrm afro afru afua afue amaa amae amam amar amb- amba ambe ambo ambr ambu amee amer ameu amfm amfr amm- amma amme ammo ammu amob amof amoo amor amou amra amro amua amum amur aoba aoeu aoma aora aorb aouf arab arae araf aram arar arau arba arbe area aree aref arem areo areu arfa arfb arff arfu arma arme armm armo armu aroa arob aroe arom aroo aror arr- arra arre arro arrr arru arua arub arue arum auaa aube auer aufe auma aur- aura aure auro baaa baaf baam baar baba babb babe babm babo babr babu baer baff bafo bama bamb bame bamf bamm bamu bar- bara barb bare barf barm baro barr baru bau- bauf baum baur bbau bbbb bbeb beaf beam bear beau beba bebb bebe bebo beeb beef beem beer befa befe beff befo bema beme bemu beo- beof beor bera bere berm bero berr beru beur bfme bmaa boab boar boba bobb bobe bobo bobu boea boee boef boeo boer bofa bofe boff bofu boma bomb bome bomu boob booe boof boom boor bor- bora bore borf borm boro borr boru boua boue bouf boum bour brab brae braf bram brao brau brea breb bree bref brem breo brer brfm brfu broa brob broe brom broo bror brou brrm brrr brue brum buar buba bubb bube bubo bubu buea buem buer bueu bufe buff bufo bufr bum- buma bumb bumf bur- bura burb bure burm buro burr buru eaaf eaba eafb eama eame eaom eara earb eare earo ebam ebba ebbo ebbr eber eboe eboo ebor ebro ebru ebur eeea eeee eefa eefe eemo eera eero efab efbr efeo effa efma efor efua emae emam emar emba embe embo embr emer emeu emma emme emmu emor emra emre eora eore eraf eram erau erba erbb erbe ereb erem erer erma erme ermo erob eroe eroo erra erre erro erua erub erum erur euba euer eur- eura eure euro faaa faam faba fabe fabm fabo fabu faeb faem fafa fafe faff fafo fama fame famo fara farb fare farm faro farr faru faue faur fbar fbom feaf feam fear feba febo feeb feem feer fefe feff fefo fema femb feme femm feof fera ferb fere ferm fero ferr feru ffar ffee ffff ffrr fmea foaf foam foar foba foer fofo foma fome fomo foof foom for- fora forb fore form foro forr foua four frab frae fram frau frea