a-a a-b a-c aaa aab aac aak aan ab- aba abb abc abk abn ac- aca acb acc ack acn aka akb akc akk akn an- ana anb anc ank ann baa bab bac bak ban bba bbb bbc bbk bbn bca bcb bcc bck bcn bka bkb bkc bkk bkn bna bnb bnc bnk bnn c-- caa cab cac cak can cba cbb cbc cbk cbn cca ccb ccc cck ccn cka ckb ckc cn- cna cnb cnc cnn ka- kaa kab kac kak kan kba kbb kbc kbk kbn kca kcb kcc kck kcn kkb kkc kkk kkn kn- kna knc knk knn naa nab nac nak nan nba nbb nbc nbk nbn nca ncb ncc nck ncn nka nkc nkk nkn nna nnb nnc nnk nnn

-ana a-ak aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aack aacn aaka aana abaa abab abac abak aban abb- abba abbb abca abcb abcc abcn acaa acab acac acan acba acca accc akaa akan akca akka akna ana- anaa anab anac anak anan anba anbb anca ancc ank- anka anna annb baaa baak baan baba babb bac- baca bacc back bacn bak- baka bana banc bank bann bbbb bcaa bcbc bcca bccc caaa caab caac caan caba cac- caca cacc cack caka cana canc cank cann cbac cbbc cbca cbcc cbcn cbka cbkn cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc ckac ckan ckbc ckck cknb cknc cnaa cnac cnbc cnna kaaa kaab kaak kaan kaba kabb kabc kacb kacc kaka kakc kakk kakn kana kanb kann kbaa kbab kbac kbak kbba kbbb kbbc kbbk kbca kbcb kbck kbkb kbkk kbna kbnn kcaa kcab kcac kcba kcbc kcbk kcca kccb kccc kcck kckc kckk kckn kcnb kkaa kkac kkan kkba kkbb kkbn kkcb kkck kkcn kkkk kknb kknn knaa knab knac knan knba knbb knbc knbn knca kncb knck kncn knkk knnb knnk naaa naab naac naan naba nabc nabk naca nacc nack naka nan- nana nanb nann nbaa nbak nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncna ncnc nnnn

-aaa- aabaa aabba aacbc abaab ababa abaca aback abaka abana abanc abank abann abbac abban abcan abccc abnak acaca acacb acack acana akaba akana akban anaba anack anaka anana anban ankaa annan babak baban babka bacab bacca back- backa backn bakan bakka banak banan banba banca banka banna c-a-c ca-ca caaan caaba caban cacak canan canna ccccc cnnnn kaaba kabaa kabab kabak kaban kabba kakan kakka kanab kanak kanka kanna kbank knack naaak naban nabba nacaa nacac nacba naccc nacka nacna nakba nanak nanan nanka nann- nanna nkana

aaaaba abaana abacab abakan abanca abbana ackack akbaba akbank akkaba anaana anabaa ananab annaba baabaa babana bacaba banaba banana bannan bbbbbb c-anca cabaan caback cabana cabban cakcak canaa canaan canaba cancan cannan k-bank kaakan kaback kabaka kabana kakana kakkak kana-a kanaan kanaka kanana kanban kank-a kankan kannan n-back nacnac nakkna naknak nanaka nanana nanban nannan

ack-ack an-naba annbank babakan babanka bac-cab bancabc bannack bannana bbbbbbb cabanac cabback can-can kacabac kacanka kakaban kanacka nabanna nan-nan nanbaka

bakbakan bbbbbbbb kanakkan nananana

abakabaka baabaabaa

na-nana-na

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc