-er a-a a-b a-t aaa aab aae aam aar aat aau aax ab- aba abb abe abm abr abt abu abx aea aeb aee aem aer aet aeu aex ama amb ame amm amr amt amu amx ar- ara arb are arm arr art aru arx at- ata atb ate atm atr att atu atx au- aua aub aue aum aur aut aux ax- axa axe axm axr axt axx b-u baa bab bae bam bar bat bau bax bba bbb bbe bbm bbr bbt bbu bbx be- bea beb bee bem ber bet beu bex bma bmb bme bmm bmr bmt bmu bmx bra brb bre brm brr brt bru brx bta btb bte btm btr btt btu btx bua bub bue bum bur but buu bux bxb bxm bxx eaa eab eae eam ear eat eau eax eba ebb ebe ebm ebr ebt ebu ebx eea eeb eee eem eer eet eex em- ema emb eme emm emr emt emu emx era erb ere erm err ert eru eta etb ete etm etr ett etu etx eu- eua eub eue eur eut eux ex- exa exe exr ext exu exx m-r maa mab mae mam mar mat mau max mba mbb mbe mbm mbr mbt mbu mbx mea meb mee mem mer met meu mex mma mmb mme mmm mmr mmt mmu mmx mra mrb mre mrm mrr mrt mru mrx mta mtb mte mtm mtr mtt mtu mtx mua mub mue mum mur mut muu mux mxa mxr mxu ra- raa rab rae ram rar rat rau rax rba rbb rbe rbm rbr rbt rbu rbx re- rea reb ree rem rer ret reu rex rma rmb rme rmm rmr rmt rmx rra rrb rrm rrr rrt rru rta rtb rte rtm rtr rtt rtu rtx rua rub rue rum rur rut ruu rux rxr t-x taa tab tae tam tar tat tau tax tba tbb tbe tbm tbr tbt tbu te- tea teb tee tem ter tet teu tex tma tmb tme tmm tmr tmt tmu tmx tra trb tre trm trr trt tru trx tta ttb tte ttm ttr ttt ttu ttx tua tub tue tum tur tut tuu tux txe txt txu ua- uaa uab uae uam uar uat uau uba ubb ube ubr ubt ubu ubx uea ueb uee uem uer uet um- uma umb ume umm umr umt umu ur- ura urb ure urm urr urt uru urx uta utb ute utm utr utt utu utx uua uue uum uur uut uuu uxb uxr uxt uxu xaa xam xar xat xau xbe xbr xbx xee xem xer xet xeu xex xma xmm xmr xmt xmu xmx xrt xrx xtm xtr xtx xue xxx

a-be aaaa aaab aaae aaam aaar aaba aabb aabm aabt aaea aaem aama aamb aame aamr aara aare aarm aart aaru aata aatt abaa abab abae abam abar abat abau abax abb- abba abbb abbe abbr abbt abee aber abet abma abmb abmt abra abta abtu abua abue abum abut aeer aemt aer- aera aeta aetr aett aetx amaa amae amam amar amat amax amb- amba ambe ambr ambu ambx amee amer amet ameu amex amm- amma amme ammu amra amta amte amua amum amur arab arae aram arar arat arau arax arba arbe area aree arem aret areu arex arma arme armm armt armu arr- arra arre arrr arrt arru arta arte artr artx arua arub arue arum arut at-t at-x ataa atab atae atar atat atax atea atee atem ater atex atm- atma atme atmu atra atre atrm atru atrx atta atte attr attu atua atub atum atur auaa aube auer auma aur- aura aure aut- aute auxa axar axat axer axum ba-x baaa baam baar baat baba babb babe babm babr babu baer bama bamb bame bamm bamu bar- bara barb bare barm barr bart baru barx bata bate batt batu bau- baum baur baux baxt bbau bbbb bbeb bbet beam bear beat beau beba bebb bebe beeb beem beer beet bema beme bemu bera bere berm berr bert beru beta bete bett betu beur beux bmaa brab brae bram brat brau brax brea breb bree brem brer bret brex brrm brrr brue brum brut brux btaa btex btrt bttb buar buat buba bubb bube bubu buea buem buer bueu bum- buma bumb bur- bura burb bure burm burr burt buru but- buta bute butt buxa eaba eama eame eara earb eare eart eata eate eaux ebam ebba ebbr eber ebru ebur eeea eeee eera eeta eete eetu eext emae emam emar emax emba embe embr emer emet emeu emex emma emme emmu emra emre emta emte er-x eram erat erau erba erbb erbe ereb erem erer eret erma erme erra erre erta ertu erua erub erum erur etam etat etbr etee etem eter etra etre etrm etta ette ettu etua etux euba euer eur- eura eure eurt exa- exam exer exmr exrx exta exte extr exum maaa maam maar maat maba mabe mabu maee maem maer mama mame mamu mar- mara mare marm marr mart maru marx mata mate matr matt matu maua maum maur maut maux maxx mbam mbba mbta mear meat mebe meem meer meet mema meme memr memu memx mer- mera merb mere merm mert meru met- meta mete mett metu meum meux mexx mmaa mmab mmar mmea mmmm mmxx mrbb mrbm mreb mree mrta mrtm mrtt mtaa mtab mtre mtrr mttr muar mube muee muet muma mume mumm mumu mura mure murr murt muru muta mute mutt mutu muut muxe muxu raab raam raat raba rabb rabe rabu raer rama ramb rame ramm ramu rara rarb rare rata rate ratt ratu raua raub raue raum raut raxa rbbb rbbr rbmx rea- reae ream rear reat reau reba rebb rebe rebu reeb reem reet rema reme rera rere rert reru reta rete retr rett reue reut reuu reux rexx rmtu rrat rrrr rrum rtee rtex ruba rubb rube rubu ruer ruet ruma rumb rume rumm rumt rura rure ruru ruta rute rutt