-er a-a a-b aaa aab aae aaf aag aar aau ab- aba abb abe abf abg abr abu aea aeb aee aef aeg aer aeu af- afa afb afe aff afg afr afu ag- aga agb age agf agg agr agu ar- ara arb are arf arg arr aru au- aua aub aue auf aug aur b-u baa bab bae baf bag bar bau bba bbb bbe bbf bbg bbr bbu be- bea beb bee bef beg ber beu bfa bfb bfe bff bfg bfr bfu bga bgb bge bgf bgg bgr bgu bra brb bre brf brg brr bru bua bub bue buf bug bur buu eaa eab eae eaf eag ear eau eba ebb ebe ebf ebg ebr ebu eea eeb eee eef eeg eer ef- efa efb efe eff efg efr ega egb ege egf egg egr egu era erb ere erf erg err eru eu- eua eub eue euf eug eur faa fab fae faf fag far fau fba fbb fbe fbf fbg fbr fbu fea feb fee fef feg fer feu ffa ffe fff ffg ffr ffu fga fgb fge fgf fgg fgr fra frb fre frf frg frr fru fua fub fue fuf fug fur fuu gaa gab gae gaf gag gar gau gba gbe gbf gbg gbr gbu ge- gea geb gee gef geg ger geu gfa gfb gfe gff gfr gga ggb ggg ggr ggu gra grb gre grf grg grr gru gu- gua gub gue guf gug gur guu ra- raa rab rae raf rag rar rau rba rbb rbe rbf rbg rbr rbu re- rea reb ree ref reg rer reu rfa rfb rfe rff rfg rfr rfu rga rgb rge rgf rgg rgr rra rrb rrf rrg rrr rru rua rub rue ruf rug rur ruu ua- uaa uab uae uaf uag uar uau uba ubb ube ubf ubg ubr ubu uea ueb uee uef ueg uer ufa ufe uff ufg ufr ufu uga ugb uge ugf ugg ugr ugu ur- ura urb ure urf urg urr uru uua uue uug uur uuu

a-be a-fu aaaa aaab aaae aaaf aaar aaba aabb aaea aafa aafb aaff aage aara aare aaru abaa abab abae abaf abag abar abau abb- abba abbb abbe abbr abee aber abff abra abua abue abuf abug aeaf aeer aega aer- aera afaa afar afee afer affa afgf afr- afra afre afru afua afue agag agar agau agba agea agee ager agfa agga agge aggu agra agre agua ague agur arab arae araf arag arar arau arba arbe area aree aref areg areu arfa arfb arff arfu arga argb arge arr- arra arre arrg arrr arru arua arub arue arug auaa aube auer aufe auga auge aur- aura aure auug baaa baaf baar baba babb babe babr babu baer baff baga bage bagg bar- bara barb bare barf barg barr baru bau- bauf baug baur bbau bbbb bbeb bbga bbrg beaf beag bear beau beba bebb bebe beeb beef beeg beer befa befe beff bega begg begu bera bere berg berr beru beur bfgf brab brae braf brag brau brea breb bree bref breg brer brfu brrr brue brug buar buba bubb bube bubu buea buer bueu bufe buff bufr buga buge bugg bur- bura burb bure burg burr buru eaaf eaba eafb eaga eage eara earb eare ebba ebbr eber ebru ebur eeea eeee eefa eefe eega eera eerg ef-g efab efbr effa efua egaa egae egar egba egbe egbu egea egee eger egfr eggb egge egra egre eraf erau erba erbb erbe ereb erer erg- erga ergg erra erre erua erub erur euba euer euge eur- eura eure faaa faba fabe fabu faeb fafa fafe faff fafg fage fagg fagu fara farb fare farg farr faru faue faur fbar feaf fear feba feeb feer fefe feff fege fegg fera ferb fere ferr feru ffar ffee ffff ffrr frab frae frag frau frea free frub frue frug fuar fubb fubu fuff fufu fuga fuge fugu fur- fura fure furg furr gaar gaba gabb gabe gabr gabu gaea gaer gafa gafb gaff gaga gage gagg gagu gara garb gare garf garg garr gaua gaub gaue gaur gbag geab gear geba gebe geer gefe gege gegg gera gerb gere geru geue gfer gffa ggfg gggg grab grae graf grau grbr grea greb gree gref greg greu grfa grrr grua grub grue gruf grug grur guaa guag guar guba gubb gubu guer gufa guff guga gugb guge gugg gugu gura gurb gure gurg gurr guru raab raaf raag raba rabb rabe rabu raef raeg raer rafa rafe raff raga rage ragg ragu rara rarb rare rarf raua raub raue rauf rbaf rbbb rbbr rea- reae reaf rear reau reba rebb rebe rebu reeb reef refe reff refg refr refu rega rege regr regu rera rere rerg reru reue reuf reuu rfae rfef rgba rgbe rrrr ruag ruba rubb rube rubu ruer rufa rufe ruff ruga ruge rugg rura rure ruru uafa uaru uaua ubar ubba ubbe uber ubra ueba uefa ufag ufer uffa uffe ufra ugab ugar ugra ugur uguu urau urba urbe ure- urea urfa urfe urff urga urge urgu urra urre urur uuuu

-aaa- aaaee aaarg aabaa aabba aabga aabra aaeaf aarau abaab ababa ababe ababu abaer abaga abara abare abaru abbar abbur abear abeau abeba abebe abeer abega abege abegg abera abere aberg aberr abfab abgar abrar abreu abura aburr aeaea aebbe aegae aegea aeger aerru afara afare afear afefe afega afere afeur affer afgar afree afure agafa agara agaue agege aggag aggar agger agree aguar agura ar-ab arab- araba arabe araea arage arara arare araru arbab arbar arbee arber arbre areae arear areef arefu arega arere arfe argue arrau arrea arrua aruaa aruba arura aruru auber aufer aufeu augea auger augre augur aurae aurar aurea aurra baabe babar babau babee baber babra babur baffa bafra bagag bagar bagea bager bagga bagge bagra bagre bagru bagua bague baraa barab barag barar barba barbe barbu barea barer barff barga barge barra barre barru barua bauer bauge