-ana -ane -ene a-be aaaa aaab aaac aaae aaan aaar aaba aabb aabc aaca aacb aacc aace aacn aacr aaea aaec aaen aana aane aara aarc aare abaa abab abac abae 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 acen acer acne acr- acra acrc acre acrr aeac aean aebn aecb aeer aena aer- aera aerc ana- anaa anab anac anae anan anar anba anbb anca ancc ance anec anee anen aner anna annb anne anrc arab arac arae aran arar arba arbe arc- arca arce area arec aree aren arna arne arr- arra arrc arre arrr baaa baan baar baba babb babe babr bac- baca bacc bace bacn baer bana banc bane bann banr bar- bara barb barc bare barn barr bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcra bean bear beba bebb bebe beca beeb been beer bena bene benn bera berc bere bern berr bner bnrr brab brac brae bran brca brcb brce brea breb brec bree bren brer brna brrr caaa caab caac caan caba cabe cac- caca cacc cace cacr caec caen caer cana canc cane cann cara carb carc care carn carr cbac cbar cbbc cbca cbcc cbce cbcn cbcr cbea cbec cbee cber 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 cen- cena cene cer- cera cerc cere cern cnaa cnac cnbc cnna cnrc cnrr crab crac cran crar crbc crca crcc crce crcr cre- crea creb crec cree cren 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 ecne ecra ecrc ecrr eeca eeea eeee eena eera eerc enab enac enan enb- enbn enbr enca ence enea enee ener enna ennc enne enra eran erba erbb erbe erca ercc erce ereb erec eren erer erna erne erra errc erre naaa naab naac naan naar naba nabc nabe naca nacc nace naea nan- nana nanb nane nann nara narc nare narn narr nbaa nbar nbbc nbca nbcc nber ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncea ncec ncee ncen ncer ncna ncnc ncra ncrc ncre neab neac nean near neba nebb nebe nebn nebr neca necc nece necr neea neeb neen neer nena nene nera nerc nere nerr nnnn nrab nrca nren nrna nrrc raab raan raba rabb rabe rac- raca racc race raec raen raer rana ranc rane rann rara rarb rare rbbb rbbr rcac rcbc rccb rccc rcnr rea- reac reae rean rear reba rebb rebe reca recc rece recr reeb reen rena rene renn rera rere rnbr rrna rrrr