-er a-a a-b a-c aaa aab aac aae aak aan aar ab- aba abb abc abe abk abn abr ac- aca acb acc ace ack acn acr aea aeb aec aee aek aen aer aka akb akc ake akk akn akr an- ana anb anc ane ank ann anr ar- ara arb arc are ark arn arr baa bab bac bae bak ban bar bba bbb bbc bbe bbk bbn bbr bca bcb bcc bce bck bcn bcr be- bea beb bec bee bek ben ber bka bkb bkc bke bkk bkn bkr bna bnb bnc bne bnk bnn bnr bra brb bre brk brn brr c-- caa cab cac cae cak can car cba cbb cbc cbe cbk cbn cbr cca ccb ccc cce cck ccn ccr ce- cea ceb cec cee cek cen cer cka ckb ckc cn- cna cnb cnc cne cnn cnr cra crb crc cre crk crn crr eaa eab eac eae eak ean ear eba ebb ebc ebe ebk ebn ebr ec- eca ecb ecc ece eck ecn ecr eea eeb eec eee eek een eer eka ekb ekc eke ekr en- ena enb enc ene enk enn enr era erb erc ere erk ern err ka- kaa kab kac kae kak kan kar kba kbb kbc kbe kbk kbn kbr kca kcb kcc kce kck kcn kcr ke- kea keb kec kee kek ken ker kkb kkc kke kkk kkn kkr kn- kna knc kne knk knn knr kra krc krk krn krr naa nab nac nae nak nan nar nba nbb nbc nbe nbk nbn nbr nca ncb ncc nce nck ncn ncr ne- nea neb nec nee nek nen ner nka nkc nke nkk nkn nkr nna nnb nnc nne nnk nnn nra nrb nrc nre nrk nrn nrr ra- raa rab rac rae rak ran rar rba rbb rbc rbe rbk rbn rbr rca rcb rcc rce rcn rcr re- rea reb rec ree rek ren rer rkb rkc rke rkk rna rnb rnc rnn rnr rra rrb rrc rrk rrn rrr

-ana -ane -ene a-ak a-be aaaa aaab aaac aaae aaan aaar aaba aabb aabc aaca aacb aacc aace aack aacn aacr aaea aaec aaen aaka aake aana aane aara aarc aare abaa abab abac abae abak aban abar abb- abba abbb abbe abbr abca abcb abcc abcn abcr abec abee aben aber abra abrc acaa acab acac acae acan acar acba acca accc acce ace- acea acec acek acen acer acke acne acr- acra acrc acre acrr aeac aean aebn aecb aeer aeka aena aer- aera aerc akaa akae akan akar akca akee aken aker akka akna akr- akra akre ana- anaa anab anac anae anak anan anar anba anbb anca ancc ance anec anee anen aner ank- anka anke anna annb anne anrc arab arac arae arak aran arar arba arbe arc- arca arce area arec aree arek aren arka arke arna arne arnk arr- arra arrc arre arrk arrr baaa baak baan baar baba babb babe babr bac- baca bacc bace back bacn baek baer bak- baka bake bakr bana banc bane bank bann banr bar- bara barb barc bare bark barn barr bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra beak bean bear beba bebb bebe beca beck beeb beek been beer beka beke bena bene benk benn bera berc bere berk bern berr bner bnrr brab brac brae brak bran brca brcb brce brea breb brec bree brek bren brer brka brkb brna brrr caaa caab caac caan caba cabe cac- caca cacc cace cack cacr caec caen caer caka cake cana canc cane cank cann cara carb carc care cark carn carr cbac cbar cbbc cbca cbcc cbce cbcn cbcr cbea cbec cbee cber cbka cbkn cbkr cbna cbre cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc ccee ccna ccnb ccnc ccne ccnr ccra ccrc ccre ceac cean cear ceba cec- ceca cece ceeb ceec ceke cen- cena cene cer- cera cerc cere cern ckac ckan ckbc ckbe ckck cken cker cknb cknc ckrc cnaa cnac cnbc cnna cnrc cnrr crab crac cran crar crbc crca crcc crce crcr cre- crea creb crec cree cren crkc crna crne eaba eaca eacc eaec eana eara earb eare earn ebac eban ebba ebbc ebbr ebcc eben eber ecaa ecac ecan ecar ecbc ecbe ecca eccb eccc ecce ecka ecne ecra ecrc ecrr eeca eeea eeee eeka eeke eena eera eerc eka- ekab ekeb ekek eken eker ekka ekne enab enac enan enb- enbn enbr enca ence enea enee ener enka enke enkr enna ennc enne enra eran erba erbb erbe erca ercc erce ereb erec eren erer erke erna erne erra errc erre kaaa kaab kaak kaan kaar kaba kabb kabc kabe kabr kacb kacc kace kaer kaka kakc kake kakk kakn kana kanb kane kann kara karb kare kark karn karr kbaa kbab kbac kbae kbak kbar kbba kbbb kbbc kbbe kbbk kbbr kbca kbcb kbce kbck kbcr kbeb kbec kbee kbek kben kber kbkb kbkk kbkr kbna kbnn kbnr kbra kbrb kbrc kbre kbrk kbrn kcaa kcab kcac kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kcea kceb kcec kcee kckc kckk kckn kckr kcnb kcnr kcrc kcrn kcrr kea- keak kean kear keba kebb kebc kebe kebn kebr keca keck kecr keek keen keer keka kekb kekc keke ken- kena kene kenk kenn kenr ker- kera kerb kerc kere kerk kern kerr kkaa kkac kkan kkar kkba kkbb kkbe kkbn kkbr kkcb kkck kkcn kkcr kkea kken kkkk kknb kkne kknn kkrb kkrc kkre kkrk kkrn kkrr knaa knab knac knan knar knba knbb knbc knbe knbn knbr knca kncb knce knck kncn kncr knea kneb knec knee knek knen knkk knnb knnk knnr knrb knrk krab krac krae krak kran krar krba krbb krbe krbk krbr krca krcb krcc krce krcn krea kreb krec kree krek kren krka krkc krke krkk krkn krkr krna krnb krne krnk krnn krrb krrc krre krrk krrn