a-be aaaa aaab aaac aaad aaae aaba aabb aabc aabd aaca aacb aacc aacd aace aada aadc aade aaea aaec abaa abab abac abad abae abb- abba abbb abbe abca abcb abcc abcd abda abec abed abee acaa acab acac acad acae acba acca accc accd acce acda acdb acdc acde ace- acea acec aced adaa adab adac adad adae adba adbc adcc adda addc addd adde adea adeb adee aeac aecb aede baaa baad baba babb babe bac- baca bacc bace bada badb badd bade baed bbad bbbb bbdd bbeb bcaa bcbc bcca bccc bcda bcde bcec bdbc bddc bead beba bebb bebe beca beda bede beeb beed c-cd caaa caab caac caba cabe cac- caca cacc cace cada cadc cadd cade caec cbac cbbc cbca cbcc cbce cbdb cbdc cbea cbec cbee ccaa ccab ccac ccad ccba ccbc ccca cccb cccc ccdc cced ccee cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceba cec- ceca cece ceda cedd cede ceeb ceec daab daad daae daba dabb daca dace dada dade daeb dbcc dcbc dcca dccb dccc dcdb dddd deac dead deae deba debe dec- deca decc decd dece deda dedd dede deeb deed eaba eaca eacc eada eadb eadd eaec ebac ebba ebbc ebcc ebed ecaa ecac ecad ecbc ecbe ecca eccb eccc ecce ecdc eced edac edad edca edda eddc edde ede- edea eeca eede eeea eeee