-er a-a a-b a-c aaa aab aac aae aag aam aar aau ab- aba abb abc abe abg abm abr abu ac- aca acb acc ace acg acm acr acu aea aeb aec aee aeg aem aer aeu ag- aga agb agc age agg agm agr agu ama amb amc ame amg amm amr amu ar- ara arb arc are arg arm arr aru au- aua aub auc aue aug aum aur b-u baa bab bac bae bag bam bar bau bba bbb bbc bbe bbg bbm bbr bbu bca bcb bcc bce bcg bcm bcr bcu be- bea beb bec bee beg bem ber beu bga bgb bgc bge bgg bgm bgr bgu bma bmb bmc bme bmg bmm bmr bmu bra brb bre brg brm brr bru bua bub buc bue bug bum bur buu c-- caa cab cac cae cag cam car cau cba cbb cbc cbe cbg cbm cbr cbu cca ccb ccc cce ccg ccm ccr ccu ce- cea ceb cec cee ceg cem cer ceu cga cgb cgc cge cgg cgm cgr cgu cma cmb cmc cme cmg cmm cmr cmu cra crb crc cre crg crm crr cru cua cub cuc cue cug cum cur cuu eaa eab eac eae eag eam ear eau eba ebb ebc ebe ebg ebm ebr ebu ec- eca ecb ecc ece ecg ecm ecr ecu eea eeb eec eee eeg eem eer ega egb egc ege egg egm egr egu em- ema emb emc eme emg emm emr emu era erb erc ere erg erm err eru eu- eua eub euc eue eug eur gaa gab gac gae gag gam gar gau gba gbc gbe gbg gbm gbr gbu gca gcb gcc gce gcg gcm gcr gcu ge- gea geb gec gee geg gem ger geu gga ggb ggc ggg ggm ggr ggu gma gmb gmc gme gmg gmm gmr gra grb grc gre grg grm grr gru gu- gua gub guc gue gug gum gur guu m-r maa mab mac mae mag mam mar mau mba mbb mbc mbe mbg mbm mbr mbu mc- mca mcb mcc mce mcg mcm mcr mcu mea meb mec mee meg mem mer meu mga mgb mgc mge mgm mgr mgu mma mmb mmc mme mmg mmm mmr mmu mra mrb mrc mre mrg mrm mrr mru mua mub muc mue mug mum mur muu ra- raa rab rac rae rag ram rar rau rba rbb rbc rbe rbg rbm rbr rbu rca rcb rcc rce rcg rcm rcr rcu re- rea reb rec ree reg rem rer reu rga rgb rgc rge rgg rgr rma rmb rmc rme rmg rmm rmr rra rrb rrc rrg rrm rrr rru rua rub ruc rue rug rum rur ruu ua- uaa uab uac uae uag uam uar uau uba ubb ubc ube ubg ubr ubu uca ucb ucc uce ucg ucm ucr ucu uea ueb uec uee ueg uem uer uga ugb ugc uge ugg ugm ugr ugu um- uma umb umc ume umg umm umr umu ur- ura urb urc ure urg urm urr uru uua uuc uue uug uum uur uuu

a-be aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aaca aacb aacc aace aacm aacr aacu aaea aaec aaem aage aama aamb aamc aame aamr aara aarc aare aarm aaru abaa abab abac abae abag abam abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abma abmb abmc abra abrc abua abue abug abum acaa acab acac acae acag acar acba acca accc acce accm accu ace- acea acec acem acer acga acgr acma acmc acme acmg acmu acr- acra acrc acre acrm acrr acu- acue acum acur aeac aecb aeer aega aer- aera aerc agac agag agam agar agau agba agca agcc agce agea agee agem ager agga agge aggu agma agmc agme agra agre agua ague agur amaa amac amae amag amam amar amb- amba ambe ambr ambu amca amcc amec amee amer ameu amga amm- amma amme ammu amra amrc amua amum amur arab arac arae arag aram arar arau arba arbe arc- arca arce arcm area arec aree areg arem areu arga argb arge arma armc arme armm armu arr- arra arrc arre arrg arrr arru arua arub arue arug arum auaa aube auca auce auer auga auge auma aur- aura aure auug baaa baam baar baba babb babe babm babr babu bac- baca bacc bace baer baga bage bagg bama bamb bamc bame bamm bamu bar- bara barb barc bare barg barm barr baru bau- baug baum baur bbau bbbb bbcm bbeb bbga bbgm bbmg bbrc bbrg bcaa bcam bcar bcbc bcbg bcca bccc bccm bcec bcer bcma bcra bcru bcuc beag beam bear beau beba bebb bebe beca becu beeb beeg beem beer bega begg begu bema beme bemu bera berc bere berg berm berr beru beur bgca bmaa bmag bmce brab brac brae brag bram brau brca brcb brce brea breb brec bree breg brem brer brmc brrm brrr bruc brue brug brum buar buba bubb bube bubu buca bucc buce bucu buea buem buer bueu buga buge bugg bum- buma bumb bur- bura burb bure burg burm burr buru caaa caab caac caam caba cabe cabg cabu cac- caca cacc cace cacm cacr caec caem caer caeu caga cage cagg cagr cama camb camc came camm cara carb carc care carm carr cauc caum cbac cbar cbbc cbca cbcc cbce cbcm cbcr cbcu cbea cbec cbee cber cbga cbgb cbme cbre cbrm ccaa ccab ccac ccag ccam ccar ccba ccbc ccca cccb cccc cccm cccu ccee ccga ccgc ccma ccmb ccmc ccmm ccra ccrc ccre ccrg ccuc ceac cear ceba cebu cec- ceca cece cecm ceeb ceec ceem cege cema cemb ceme cemm cemr cemu cer- cera cerc cere cgac cgcc cgcg cger cgmc cmaa cmac cmba cmbc cmcc cmea cmec cmmb cmmc cmra cmrr crab crac crag cram crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creg crem