-ana -ane -ene a-ak a-be aaaa aaab aaac aaae aaan aaba aabb aabc aaca aacb aacc aace aack aacn aaea aaec aaen aaka aake aana aane abaa abab abac abae abak aban abb- abba abbb abbe abca abcb abcc abcn abec abee aben acaa acab acac acae acan acba acca accc acce ace- acea acec acek acen acke acne aeac aean aebn aecb aeka aena akaa akae akan akca akee aken akka akna ana- anaa anab anac anae anak anan anba anbb anca ancc ance anec anee anen ank- anka anke anna annb anne baaa baak baan baba babb babe bac- baca bacc bace back bacn baek bak- baka bake bana banc bane bank bann bbbb bbeb bcaa bcbc bcca bccc bcec beak bean beba bebb bebe beca beck beeb beek been beka beke bena bene benk benn caaa caab caac caan caba cabe cac- caca cacc cace cack caec caen caka cake cana canc cane cank cann cbac cbbc cbca cbcc cbce cbcn cbea cbec cbee cbka cbkn cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccee ccna ccnb ccnc ccne ceac cean ceba cec- ceca cece ceeb ceec ceke cen- cena cene ckac ckan ckbc ckbe ckck cken cknb cknc cnaa cnac cnbc cnna eaba eaca eacc eaec eana ebac eban ebba ebbc ebcc eben ecaa ecac ecan ecbc ecbe ecca eccb eccc ecce ecka ecne eeca eeea eeee eeka eeke eena eka- ekab ekeb ekek eken ekka ekne enab enac enan enb- enbn enca ence enea enee enka enke enna ennc enne kaaa kaab kaak kaan kaba kabb kabc kabe kacb kacc kace kaka kakc kake kakk kakn kana kanb kane kann kbaa kbab kbac kbae kbak kbba kbbb kbbc kbbe kbbk kbca kbcb kbce kbck kbeb kbec kbee kbek kben kbkb kbkk kbna kbnn kcaa kcab kcac kcba kcbc kcbk kcca kccb kccc kcck kcea kceb kcec kcee kckc kckk kckn kcnb kea- keak kean keba kebb kebc kebe kebn keca keck keek keen keka kekb kekc keke ken- kena kene kenk kenn kkaa kkac kkan kkba kkbb kkbe kkbn kkcb kkck kkcn kkea kken kkkk kknb kkne kknn knaa knab knac knan knba knbb knbc knbe knbn knca kncb knce knck kncn knea kneb knec knee knek knen knkk knnb knnk naaa naab naac naan naba nabc nabe nabk naca nacc nace nack naea naka nake nan- nana nanb nane nann nbaa nbak nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncea ncec ncee ncen ncna ncnc neab neac nean neba nebb nebe nebn neca necc nece neck neea neeb neen neka neke nena nene nnnn