-er a-a a-b a-t aaa aab aae aaf aag aar aat aau ab- aba abb abe abf abg abr abt abu aea aeb aee aef aeg aer aet aeu af- afa afb afe aff afg afr aft afu ag- aga agb age agf agg agr agt agu ar- ara arb are arf arg arr art aru at- ata atb ate atf atg atr att atu au- aua aub aue auf aug aur aut b-u baa bab bae baf bag bar bat bau bba bbb bbe bbf bbg bbr bbt bbu be- bea beb bee bef beg ber bet beu bfa bfb bfe bff bfg bfr bft bfu bga bgb bge bgf bgg bgr bgt bgu bra brb bre brf brg brr brt bru bta btb bte btf btg btr btt btu bua bub bue buf bug bur but buu eaa eab eae eaf eag ear eat eau eba ebb ebe ebf ebg ebr ebt ebu eea eeb eee eef eeg eer eet ef- efa efb efe eff efg efr eft ega egb ege egf egg egr egt egu era erb ere erf erg err ert eru eta etb ete etf etg etr ett etu eu- eua eub eue euf eug eur eut faa fab fae faf fag far fat fau fba fbb fbe fbf fbg fbr fbt fbu fea feb fee fef feg fer fet feu ffa ffe fff ffg ffr fft ffu fga fgb fge fgf fgg fgr fgt fra frb fre frf frg frr frt fru fta ftb fte ftf ftg ftr ftt ftu fua fub fue fuf fug fur fut fuu gaa gab gae gaf gag gar gat gau gba gbe gbf gbg gbr gbt gbu ge- gea geb gee gef geg ger get geu gfa gfb gfe gff gfr gft gga ggb ggg ggr ggt ggu gra grb gre grf grg grr grt gru gta gtb gte gtf gtg gtr gtt gtu gu- gua gub gue guf gug gur gut guu ra- raa rab rae raf rag rar rat rau rba rbb rbe rbf rbg rbr rbt rbu re- rea reb ree ref reg rer ret reu rfa rfb rfe rff rfg rfr rft rfu rga rgb rge rgf rgg rgr rgt rra rrb rrf rrg rrr rrt rru rta rtb rte rtf rtg rtr rtt rtu rua rub rue ruf rug rur rut ruu taa tab tae taf tag tar tat tau tba tbb tbe tbf tbg tbr tbt tbu te- tea teb tee tef teg ter tet teu tfa tfb tfe tff tfg tfr tft tfu tga tgb tge tgf tgg tgr tgt tgu tra trb tre trf trg trr trt tru tta ttb tte ttf ttg ttr ttt ttu tua tub tue tuf tug tur tut tuu ua- uaa uab uae uaf uag uar uat uau uba ubb ube ubf ubg ubr ubt ubu uea ueb uee uef ueg uer uet ufa ufe uff ufg ufr uft ufu uga ugb uge ugf ugg ugr ugt ugu ur- ura urb ure urf urg urr urt uru uta utb ute utf utr utt utu uua uue uug uur uut uuu

a-be a-fu aaaa aaab aaae aaaf aaar aaba aabb aabt aaea aafa aafb aaff aage aara aare aart aaru aata aatf aatt abaa abab abae abaf abag abar abat abau abb- abba abbb abbe abbr abbt abee aber abet abff abra abta abtu abua abue abuf abug abut aeaf aeer aega aer- aera aeta aetf aetr aett afaa afar afat afee afer afet affa afft afgf afr- afra afre afru afta afte afua afue agag agar agat agau agba agea agee ager aget agfa agga agge aggu agra agre agta agte agtr agua ague agur agut arab arae araf arag arar arat arau arba arbe area aree aref areg aret areu arfa arfb arff arft arfu arga argb arge arr- arra arre arrg arrr arrt arru arta arte artr arua arub arue arug arut at-t ataa atab atae atar atat atea atee atef ater atfb atfe atra atre atru atta atte attr attu atua atub atug atur auaa aube auer aufe auga auge aur- aura aure aut- aute auug baaa baaf baar baat baba babb babe babr babu baer baff baft baga bage bagg bagt bar- bara barb bare barf barg barr bart baru bata bate batf batt batu bau- bauf baug baur bbau bbbb bbeb bbet bbga bbrg beaf beag bear beat beau beba bebb bebe beeb beef beeg beer beet befa befe beff beft bega begg begu bera bere berg berr bert beru beta bete bett betu beur bfgf bfta bftt brab brae braf brag brat brau brea breb bree bref breg brer bret brfu brrr brue brug brut btaa btaf btrt bttb buar buat buba bubb bube bubu buea buer bueu bufe buff bufr buga buge bugg bur- bura burb bure burg burr burt buru but- buta bute butt eaaf eaba eafb eaga eage eara earb eare eart eata eate ebba ebbr eber ebru ebur eeea eeee eefa eefe eega eera eerg eeta eete eetu ef-g efab efbr efet effa eft- efta eftu efua egaa egae egar egat egba egbe egbu egea egee eger egfr eggb egge egra egre egta egte eraf erat erau erba erbb erbe ereb erer eret erft erg- erga ergg erra erre erta ertu erua erub erur etag etat etbr etee eter etfa etfb etfe etra etre etta ette ettu etua euba euer euge eur- eura eure eurt faaa faba fabe fabu faeb fafa fafe faff fafg fage fagg fagu fara farb fare farg farr fart faru fata fate fatf fatt faue faur faut fbar feaf fear feat feba feeb feer feet fefe feff fege fegg fera ferb fere ferr fert feru feta fete fetr fett fetu ffar ffee ffff ffrr fftf frab frae frag frat frau frea free fret frta frub frue frug ftea fter ftub fuar fuat fubb fubu fuet fuff fufu fuga fuge fugu fur- fura fure furg furr furt futa fute futu gaar gaba gabb gabe gabr gabt gabu gaea gaer gafa gafb gaff