-er a-a a-b a-c aaa aab aac aae aaj aak aar aau ab- aba abb abc abe abj abk abr abu ac- aca acb acc ace acj ack acr acu aea aeb aec aee aej aek aer aeu aja ajb ajc aje ajj ajk ajr aju aka akb akc ake akj akk akr aku ar- ara arb arc are arj ark arr aru au- aua aub auc aue auj auk aur b-u baa bab bac bae baj bak bar bau bba bbb bbc bbe bbk bbr bbu bca bcb bcc bce bcj bck bcr bcu be- bea beb bec bee bek ber beu bja bjc bjj bjk bjr bju bka bkb bkc bke bkk bkr bra brb bre brj brk brr bru bua bub buc bue buj buk bur buu c-- c-j caa cab cac cae caj cak car cau cba cbb cbc cbe cbj cbk cbr cbu cca ccb ccc cce ccj cck ccr ccu ce- cea ceb cec cee cej cek cer ceu cja cjb cjc cjk cjr cka ckb ckc cra crb crc cre crj crk crr cru cua cub cuc cue cuk cur cuu eaa eab eac eae eaj eak ear eau eba ebb ebc ebe ebj ebk ebr ebu ec- eca ecb ecc ece ecj eck ecr ecu eea eeb eec eee eek eer eja ejc eju eka ekb ekc eke ekr eku era erb erc ere erk err eru eu- eua eub euc eue euj eur jaa jab jac jae jaj jak jar jau jba jbc jbj jbk jbr jbu jca jcb jcc jce jck jcr jcu jea jeb jec jee jej jek jer jeu jja jjb jjc jjj jjk jjr jju jka jkb jkk jkr jku jra jrb jrc jrk jrr jub jue juk jur ka- kaa kab kac kae kaj kak kar kau kba kbb kbc kbe kbk kbr kbu kca kcb kcc kce kck kcr kcu ke- kea keb kec kee kek ker kjb kjc kje kjr kju kkb kkc kke kkk kkr kku kra krc krk krr kru kub kuc kue kuj kuk kur kuu ra- raa rab rac rae raj rak rar rau rba rbb rbc rbe rbk rbr rbu rca rcb rcc rce rcj rcr rcu re- rea reb rec ree rek rer reu rja rjc rjk rjr rkb rkc rke rkk rku rra rrb rrc rrk rrr rru rua rub ruc rue ruk rur ruu ua- uaa uab uac uae uaj uak uar uau uba ubb ubc ube ubk ubr ubu uca ucb ucc uce ucj uck ucr ucu uea ueb uec uee uer ujc uka ukb ukc uke ukk ukr uku ur- ura urb urc ure urk urr uru uua uuc uue uur uuu

a-ak a-be aaaa aaab aaac aaae aaar aaba aabb aabc aaca aacb aacc aace aack aacr aacu aaea aaec aaka aake aaku aara aarc aare aaru abaa abab abac abae abaj abak abar abau abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abra abrc abua abue abuk acaa acab acac acae acar acba acca accc acce accu ace- acea acec acek acer acke acr- acra acrc acre acrr acu- acue acur aeac aecb aeer aeka aer- aera aerc ajab ajac ajak ajar ajba ajee ajka ajur akaa akae akar akca akee aker akeu akka akku akr- akra akre akua arab arac arae arak arar arau arba arbe arc- arca arce area arec aree arek areu arja arje arju arka arke arr- arra arrc arre arrk arrr arru arua arub arue auaa aube auca auce auer auja auke aur- aura aure baaa baak baar baba babb babe babr babu bac- baca bacc bace back baek baer baja baju bak- baka bake bakr baku bar- bara barb barc bare bark barr baru bau- bauk baur bbau bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bcru bcuc beak bear beau beba bebb bebe beca beck becu beeb beej beek beer beja beka beke bera berc bere berk berr beru beuk beur bjcc bjec brab brac brae braj brak brau brca brcb brce brea breb brec bree brek brer brje brka brkb brrr bruc brue buar buba bubb bube bubu buca bucc buce buck bucu buea buer bueu buja buje buju buka buke bukk buku bur- bura burb bure burj burk burr buru caaa caab caac caba cabe cabu cac- caca cacc cace cack cacr caec caer caeu caja caju caka cake cara carb carc care carj cark carr cauc cauk cbac cbar cbbc cbca cbcc cbce cbcr cbcu cbea cbec cbee cber cbka cbkj cbkr cbre cbrj ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccu ccee ccra ccrc ccre ccuc ceac cear ceba cebu cec- ceca cece ceeb ceec ceja cejc ceke cer- cera cerc cere cjar cjbc cjbk cjca cjcb cjcj cjeu cjrb cjrc cjrj cjru ckac ckbc ckbe ckck cker ckjr ckrc crab crac craj crar crau crbc crbu crca crcc crce crcr cre- crea creb crec cree creu crkc crub crue cruk cuau cub- cuba cubb cube cuca cucc cuce cuck cuek cuer cuju cuk- cuka cuke cura curb cure curr eaba eaca eacc eaec eara earb eare ebac ebba ebbc ebbr ebcc eber ebru ebur ecaa ecac ecar ecbc ecbe ecca eccb eccc ecce ecka ecra ecrc ecrr ecru ecua eeca eeea eeee eeka eeke eera eerc ejer eka- ekab ekeb ekek eker ekka ekur erau erba erbb erbe erca ercc erce ereb erec erer erja erke erra errc erre erua erub eruc erur euba eubc euer eur- eura eurc eure jaak jaar jaba jabr jaca jacc jace jack jacu jaer jaja jaju jaka jake jaku jara jarc jare jark jarr jaru jauk jaur jbaa jbar jcbc jccc jcrc jear jebb jebe jeer jeju jeke jera jere jerk jeru jeuk jeur jjar jjcc jrbr juab juar juba jube jubu juca juce juck jucu juja juju juka juke juku jura jure jurr kaaa kaab kaak kaar kaba kabb kabc kabe kabr kabu kacb kacc kace kacu kaer kaja kajb kajc kaje kajk kajr