a-a a-b a-c aaa aab aac aan ab- aba abb abc abn ac- aca acb acc acn an- ana anb anc ann baa bab bac ban bba bbb bbc bbn bca bcb bcc bcn bna bnb bnc bnn c-- caa cab cac can cba cbb cbc cbn cca ccb ccc ccn cn- cna cnb cnc cnn naa nab nac nan nba nbb nbc nbn nca ncb ncc ncn nna nnb nnc nnn

-ana aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aacn aana abaa abab abac aban abb- abba abbb abca abcb abcc abcn acaa acab acac acan acba acca accc ana- anaa anab anac anan anba anbb anca ancc anna annb baaa baan baba babb bac- baca bacc bacn bana banc bann bbbb bcaa bcbc bcca bccc caaa caab caac caan caba cac- caca cacc cana canc cann cbac cbbc cbca cbcc cbcn cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc cnaa cnac cnbc cnna naaa naab naac naan naba nabc naca nacc nan- nana nanb nann nbaa nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncna ncnc nnnn

-aaa- aabaa aabba aacbc abaab ababa abaca abana abanc abann abbac abban abcan abccc acaca acacb acana anaba anana anban annan baban bacab bacca banan banba banna c-a-c ca-ca caaan caaba caban canan canna ccccc cnnnn naban nabba nacaa nacac nacba naccc nacna nanan nann- nanna

aaaaba abaana abacab abanca abbana anaana anabaa ananab annaba baabaa babana bacaba banaba banana bannan bbbbbb c-anca cabaan cabana cabban canaa canaan canaba cancan cannan nacnac nanana nanban nannan

an-naba bac-cab bancabc bannana bbbbbbb cabanac can-can nabanna nan-nan

bbbbbbbb nananana

baabaabaa

na-nana-na

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc