-er a-a a-b a-c aaa aab aac aae aaj aak aam aar ab- aba abb abc abe abj abk abm abr ac- aca acb acc ace acj ack acm acr aea aeb aec aee aej aek aem aer aja ajb ajc aje ajj ajk ajm ajr aka akb akc ake akj akk akm akr ama amb amc ame amk amm amr ar- ara arb arc are arj ark arm arr baa bab bac bae baj bak bam bar bba bbb bbc bbe bbk bbm bbr bca bcb bcc bce bcj bck bcm bcr be- bea beb bec bee bek bem ber bja bjc bjj bjk bjm bjr bka bkb bkc bke bkk bkm bkr bma bmb bmc bme bmj bmk bmm bmr bra brb bre brj brk brm brr c-- c-j caa cab cac cae caj cak cam car cba cbb cbc cbe cbj cbk cbm cbr cca ccb ccc cce ccj cck ccm ccr ce- cea ceb cec cee cej cek cem cer cja cjb cjc cjk cjr cka ckb ckc ckm cma cmb cmc cme cmj cmk cmm cmr cra crb crc cre crj crk crm crr eaa eab eac eae eaj eak eam ear eba ebb ebc ebe ebj ebk ebm ebr ec- eca ecb ecc ece ecj eck ecm ecr eea eeb eec eee eek eem eer eja ejc eka ekb ekc eke ekr em- ema emb emc eme emk emm emr era erb erc ere erk erm err jaa jab jac jae jaj jak jam jar jba jbc jbj jbk jbm jbr jca jcb jcc jce jck jcm jcr jea jeb jec jee jej jek jem jer jja jjb jjc jjj jjk jjr jka jkb jkk jkm jkr jma jmb jmc jme jmj jmm jmr jra jrb jrc jrk jrm jrr ka- kaa kab kac kae kaj kak kam kar kba kbb kbc kbe kbk kbm kbr kca kcb kcc kce kck kcm kcr ke- kea keb kec kee kek kem ker kjb kjc kje kjr kkb kkc kke kkk kkm kkr kma kmb kmc kme kmj kmk kmm kra krc krk krr m-r maa mab mac mae maj mak mam mar mba mbb mbc mbe mbj mbk mbm mbr mc- mca mcb mcc mce mck mcm mcr mea meb mec mee mej mek mem mer mjb mjc mje mjj mjk mjm mjr mka mkb mkc mke mkk mkm mkr mma mmb mmc mme mmj mmk mmm mmr mra mrb mrc mre mrj mrk mrm mrr ra- raa rab rac rae raj rak ram rar rba rbb rbc rbe rbk rbm rbr rca rcb rcc rce rcj rcm rcr re- rea reb rec ree rek rem rer rja rjc rjk rjm rjr rkb rkc rke rkk rkm rma rmb rmc rme rmm rmr rra rrb rrc rrk rrm rrr

a-ak a-be aaaa aaab aaac aaae aaam aaar aaba aabb aabc aabm aaca aacb aacc aace aack aacm aacr aaea aaec aaem aaka aake aama aamb aamc aame aamr aara aarc aare aarm abaa abab abac abae abaj abak abam abar abb- abba abbb abbe abbr abca abcb abcc abcr abec abee aber abma abmb abmc abra abrc acaa acab acac acae acar acba acca accc acce accm ace- acea acec acek acem acer acke acma acmc acme acr- acra acrc acre acrm acrr aeac aecb aeer aeka aer- aera aerc ajab ajac ajak ajam ajar ajba ajee ajka akaa akae akam akar akca akee aker akka akr- akra akre amaa amac amae amaj amam amar amb- amba ambe ambr amca amcc amec amee amer amka amm- amma amme amra amrc arab arac arae arak aram arar arba arbe arc- arca arce arcm area arec aree arek arem arja arje arka arke arma armc arme armm arr- arra arrc arre arrk arrr baaa baak baam baar baba babb babe babm babr bac- baca bacc bace back baek baer baja bak- baka bake bakr bama bamb bamc bame bamm bar- bara barb barc bare bark barm barr bbbb bbcm bbeb bbrc bcaa bcam bcar bcbc bcca bccc bccm bcec bcer bcma bcra beak beam bear beba bebb bebe beca beck beeb beej beek beem beer beja beka beke bema beme bera berc bere berk berm berr bjcc bjec bmaa bmaj bmce brab brac brae braj brak bram brca brcb brce brea breb brec bree brek brem brer brje brka brkb brmc brrm brrr caaa caab caac caam caba cabe cac- caca cacc cace cack cacm cacr caec caem caer caja caka cake cama camb camc came camk camm cara carb carc care carj cark carm carr cbac cbar cbbc cbca cbcc cbce cbcm cbcr cbea cbec cbee cber cbka cbkj cbkm cbkr cbme cbre cbrj cbrm ccaa ccab ccac ccam ccar ccba ccbc ccca cccb cccc cccm ccee cckm ccma ccmb ccmc ccmm ccra ccrc ccre ceac cear ceba cec- ceca cece cecm ceeb ceec ceem ceja cejc ceke cema cemb ceme cemm cemr cer- cera cerc cere cjar cjbc cjbk cjca cjcb cjcj cjme cjmr cjrb cjrc cjrj ckac ckbc ckbe ckck ckcm ckem cker ckjr ckrc ckrm cmaa cmac cmaj cmba cmbc cmcc cmea cmec cmmb cmmc cmra cmrr crab crac craj cram crar crbc crca crcc crce crcr cre- crea creb crec cree crem crkc crmb eaba eaca eacc eaec eama eame eara earb eare ebac ebam ebba ebbc ebbr ebcc eber ecaa ecac ecam ecar ecbc ecbe ecca eccb eccc ecce eccm ecem ecka ecma ecra ecrc ecrm ecrr eeca eeea eeee eeka eeke eera eerc ejer eka- ekab ekam ekeb ekek eker ekka ekma emac emae emaj emam emar emba embe embr emcc emek emer emjc emma emme emra emre eram erba erbb erbe erca ercc erce ereb erec erem erer erja erke erma ermc erme erra errc erre jaak jaar jaba jabr jaca jacc jace jack jaer jaja jaka jake jama jamb jara jarc jare jark jarm jarr jbaa jbar jcbc jccc jcrc jear jebb jebe jeem jeer jeke jema jemm jera jere jerk jerm jjam jjar jjcc jmcc jmrc jrbr