-er a-a a-b a-c a-t aaa aab aac aae aam aar aat aau ab- aba abb abc abe abm abr abt abu ac- aca acb acc ace acm acr act acu aea aeb aec aee aem aer aet aeu ama amb amc ame amm amr amt amu ar- ara arb arc are arm arr art aru at- ata atb atc ate atm atr att atu au- aua aub auc aue aum aur aut b-u baa bab bac bae bam bar bat bau bba bbb bbc bbe bbm bbr bbt bbu bca bcb bcc bce bcm bcr bct bcu be- bea beb bec bee bem ber bet beu bma bmb bmc bme bmm bmr bmt bmu bra brb bre brm brr brt bru bta btb btc bte btm btr btt btu bua bub buc bue bum bur but buu c-- caa cab cac cae cam car cat cau cba cbb cbc cbe cbm cbr cbt cbu cca ccb ccc cce ccm ccr cct ccu ce- cea ceb cec cee cem cer cet ceu cma cmb cmc cme cmm cmr cmt cmu cra crb crc cre crm crr crt cru cta ctb ctc cte ctm ctr ctt ctu cua cub cuc cue cum cur cut cuu eaa eab eac eae eam ear eat eau eba ebb ebc ebe ebm ebr ebt ebu ec- eca ecb ecc ece ecm ecr ect ecu eea eeb eec eee eem eer eet em- ema emb emc eme emm emr emt emu era erb erc ere erm err ert eru eta etb etc ete etm etr ett etu eu- eua eub euc eue eur eut m-r maa mab mac mae mam mar mat mau mba mbb mbc mbe mbm mbr mbt mbu mc- mca mcb mcc mce mcm mcr mct mcu mea meb mec mee mem mer met meu mma mmb mmc mme mmm mmr mmt mmu mra mrb mrc mre mrm mrr mrt mru mta mtb mtc mte mtm mtr mtt mtu mua mub muc mue mum mur mut muu ra- raa rab rac rae ram rar rat rau rba rbb rbc rbe rbm rbr rbt rbu rca rcb rcc rce rcm rcr rct rcu re- rea reb rec ree rem rer ret reu rma rmb rmc rme rmm rmr rmt rra rrb rrc rrm rrr rrt rru rta rtb rtc rte rtm rtr rtt rtu rua rub ruc rue rum rur rut ruu taa tab tac tae tam tar tat tau tba tbb tbc tbe tbm tbr tbt tbu tca tcb tcc tce tcm tcr tct tcu te- tea teb tec tee tem ter tet teu tma tmb tmc tme tmm tmr tmt tmu tra trb trc tre trm trr trt tru tta ttb ttc tte ttm ttr ttt ttu tua tub tuc tue tum tur tut tuu ua- uaa uab uac uae uam uar uat uau uba ubb ubc ube ubr ubt ubu uca ucb ucc uce ucm ucr uct ucu uea ueb uec uee uem uer uet um- uma umb umc ume umm umr umt umu ur- ura urb urc ure urm urr urt uru uta utb utc ute utm utr utt utu uua uuc uue uum uur uut uuu

a-be aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aabt aaca aacb aacc aace aacm aacr aact aacu aaea aaec aaem aama aamb aamc aame aamr aara aarc aare aarm aart aaru aata aatc aatt abaa abab abac abae abam abar abat abau abb- abba abbb abbe abbr abbt abca abcb abcc abcr abct abec abee aber abet abma abmb abmc abmt abra abrc abta abtu abua abue abum abut ac-t acaa acab acac acae acar acat acba acca accc acce accm acct accu ace- acea acec acem acer acet acma acmc acme acmu acr- acra acrc acre acrm acrr acta actc acte actt actu acu- acue acum acur acut aeac aecb aect aeer aemt aer- aera aerc aeta aetc aetr aett amaa amac amae amam amar amat amb- amba ambe ambr ambu amca amcc amec amee amer amet ameu amm- amma amme ammu amra amrc amta amtc amte amua amum amur arab arac arae aram arar arat arau arba arbe arc- arca arce arcm arct area arec aree arem aret areu arma armc arme armm armt armu arr- arra arrc arre arrr arrt arru arta artc arte artr arua arub arue arum arut at-t ataa atab atac atae atar atat atca atcc atcr atea atec atee atem ater atm- atma atme atmu atra atrc atre atrm atru atta atte attr attu atua atub atuc atum atur auaa aube auca auce auct auer auma aur- aura aure aut- aute baaa baam baar baat baba babb babe babm babr babu bac- baca bacc bace bact baer bama bamb bamc bame bamm bamu bar- bara barb barc bare barm barr bart baru bata batc bate batt batu bau- baum baur bbau bbbb bbcm bbeb bbet bbrc bcaa bcam bcar bcat bcbc bcca bccc bccm bcec bcer bcet bcma bcra bcru bctc bcuc beam bear beat beau beba bebb bebe beca becu beeb beem beer beet bema beme bemu bera berc bere berm berr bert beru beta betc bete bett betu beur bmaa bmce bmtc brab brac brae bram brat brau brca brcb brce brea breb brec bree brem brer bret brmc brrm brrr brtc bruc brue brum brut btaa btcc btec btrc btrt bttb buar buat buba bubb bube bubu buca bucc buce bucu buea buem buer bueu bum- buma bumb bur- bura burb bure burm burr burt buru but- buta bute butt caaa caab caac caam caat caba cabe cabu cac- caca cacc cace cacm cacr caec caem caer caeu cama camb camc came camm camt cara carb carc care carm carr cart cat- cata catb catc cate catm catt catu cauc caum caut cbac cbar cbat cbbc cbca cbcc cbce cbcm cbcr cbct cbcu cbea cbec cbee cber cbet cbme cbre cbrm cbrt cbta cbtc ccaa ccab ccac ccam ccar ccat ccba ccbc ccca cccb cccc cccm cccu ccee ccma ccmb