-er a-a a-b a-c aaa aab aac aae aak aam aar aau ab- aba abb abc abe abk abm abr abu ac- aca acb acc ace ack acm acr acu aea aeb aec aee aek aem aer aeu aka akb akc ake akk akm akr aku ama amb amc ame amk amm amr amu ar- ara arb arc are ark arm arr aru au- aua aub auc aue auk aum aur b-u baa bab bac bae bak bam bar bau bba bbb bbc bbe bbk bbm bbr bbu bca bcb bcc bce bck bcm bcr bcu be- bea beb bec bee bek bem ber beu bka bkb bkc bke bkk bkm bkr bma bmb bmc bme bmk bmm bmr bmu bra brb bre brk brm brr bru bua bub buc bue buk bum bur buu c-- caa cab cac cae cak cam car cau cba cbb cbc cbe cbk cbm cbr cbu cca ccb ccc cce cck ccm ccr ccu ce- cea ceb cec cee cek cem cer ceu cka ckb ckc ckm cma cmb cmc cme cmk cmm cmr cmu cra crb crc cre crk crm crr cru cua cub cuc cue cuk cum cur cuu eaa eab eac eae eak eam ear eau eba ebb ebc ebe ebk ebm ebr ebu ec- eca ecb ecc ece eck ecm ecr ecu eea eeb eec eee eek eem eer eka ekb ekc eke ekr eku em- ema emb emc eme emk emm emr emu era erb erc ere erk erm err eru eu- eua eub euc eue eur ka- kaa kab kac kae kak kam kar kau kba kbb kbc kbe kbk kbm kbr kbu kca kcb kcc kce kck kcm kcr kcu ke- kea keb kec kee kek kem ker kkb kkc kke kkk kkm kkr kku kma kmb kmc kme kmk kmm kmu kra krc krk krr kru kub kuc kue kuk kum kur kuu m-r maa mab mac mae mak mam mar mau mba mbb mbc mbe mbk mbm mbr mbu mc- mca mcb mcc mce mck mcm mcr mcu mea meb mec mee mek mem mer meu mka mkb mkc mke mkk mkm mkr mku mma mmb mmc mme mmk mmm mmr mmu mra mrb mrc mre mrk mrm mrr mru mua mub muc mue muk mum mur muu ra- raa rab rac rae rak ram rar rau rba rbb rbc rbe rbk rbm rbr rbu rca rcb rcc rce rcm rcr rcu re- rea reb rec ree rek rem rer reu rkb rkc rke rkk rkm rku rma rmb rmc rme rmm rmr rra rrb rrc rrk rrm rrr rru rua rub ruc rue ruk rum rur ruu ua- uaa uab uac uae uak uam uar uau uba ubb ubc ube ubk ubr ubu uca ucb ucc uce uck ucm ucr ucu uea ueb uec uee uem uer uka ukb ukc uke ukk ukr uku um- uma umb umc ume umm umr umu ur- ura urb urc ure urk urm urr uru uua uuc uue uum uur uuu

a-ak a-be aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aaca aacb aacc aace aack aacm aacr aacu aaea aaec aaem aaka aake aaku aama aamb aamc aame aamr aara aarc aare aarm aaru abaa abab abac abae abak abam abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abma abmb abmc abra abrc abua abue abuk abum acaa acab acac acae acar acba acca accc acce accm accu ace- acea acec acek acem acer acke acma acmc acme acmu acr- acra acrc acre acrm acrr acu- acue acum acur aeac aecb aeer aeka aer- aera aerc akaa akae akam akar akca akee aker akeu akka akku akr- akra akre akua amaa amac amae amam amar amb- amba ambe ambr ambu amca amcc amec amee amer ameu amka amm- amma amme ammu amra amrc amua amum amur arab arac arae arak aram arar arau arba arbe arc- arca arce arcm area arec aree arek arem areu arka arke arma armc arme armm armu arr- arra arrc arre arrk arrr arru arua arub arue arum auaa aube auca auce auer auke auma aur- aura aure baaa baak baam baar baba babb babe babm babr babu bac- baca bacc bace back baek baer bak- baka bake bakr baku bama bamb bamc bame bamm bamu bar- bara barb barc bare bark barm barr baru bau- bauk baum baur bbau bbbb bbcm bbeb bbrc bcaa bcam bcar bcbc bcca bccc bccm bcec bcer bcma bcra bcru bcuc beak beam bear beau beba bebb bebe beca beck becu beeb beek beem beer beka beke bema beme bemu bera berc bere berk berm berr beru beuk beur bmaa bmce brab brac brae brak bram brau brca brcb brce brea breb brec bree brek brem brer brka brkb brmc brrm brrr bruc brue brum buar buba bubb bube bubu buca bucc buce buck bucu buea buem buer bueu buka buke bukk buku bum- buma bumb bur- bura burb bure burk burm burr buru caaa caab caac caam caba cabe cabu cac- caca cacc cace cack cacm cacr caec caem caer caeu caka cake cama camb camc came camk camm cara carb carc care cark carm carr cauc cauk caum cbac cbar cbbc cbca cbcc cbce cbcm cbcr cbcu cbea cbec cbee cber cbka cbkm cbkr cbme cbre cbrm ccaa ccab ccac ccam ccar ccba ccbc ccca cccb cccc cccm cccu ccee cckm ccma ccmb ccmc ccmm ccra ccrc ccre ccuc ceac cear ceba cebu cec- ceca cece cecm ceeb ceec ceem ceke cema cemb ceme cemm cemr cemu cer- cera cerc cere ckac ckbc ckbe ckck ckcm ckem cker ckrc ckrm cmaa cmac cmba cmbc cmcc cmea cmec cmmb cmmc cmra cmrr crab crac cram crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree crem creu crkc crmb crub crue cruk crum cuau cub- cuba cubb cube cuca cucc cuce cuck cucm cuek cuer cuk- cuka cuke cum- cuma cume cura curb cure