-ana -ane -ene a-be aaaa aaab aaac aaae aaan aaba aabb aabc aaca aacb aacc aace aacn aaea aaec aaen aana aane abaa abab abac abae aban abb- abba abbb abbe abca abcb abcc abcn abec abee aben acaa acab acac acae acan acba acca accc acce ace- acea acec acen acne aeac aean aebn aecb aena ana- anaa anab anac anae anan anba anbb anca ancc ance anec anee anen anna annb anne baaa baan baba babb babe bac- baca bacc bace bacn bana banc bane bann bbbb bbeb bcaa bcbc bcca bccc bcec bean beba bebb bebe beca beeb been bena bene benn caaa caab caac caan caba cabe cac- caca cacc cace caec caen cana canc cane cann cbac cbbc cbca cbcc cbce cbcn cbea cbec cbee cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccee ccna ccnb ccnc ccne ceac cean ceba cec- ceca cece ceeb ceec cen- cena cene cnaa cnac cnbc cnna eaba eaca eacc eaec eana ebac eban ebba ebbc ebcc eben ecaa ecac ecan ecbc ecbe ecca eccb eccc ecce ecne eeca eeea eeee eena enab enac enan enb- enbn enca ence enea enee enna ennc enne naaa naab naac naan naba nabc nabe naca nacc nace naea nan- nana nanb nane nann nbaa 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 neea neeb neen nena nene nnnn