a-a a-b a-c aaa aab aac aak aan aax ab- aba abb abc abk abn abx ac- aca acb acc ack acn acx aka akb akc akk akn an- ana anb anc ank ann anx ax- axa axk axn axx baa bab bac bak ban bax bba bbb bbc bbk bbn bbx bca bcb bcc bck bcn bcx bka bkb bkc bkk bkn bkx bna bnb bnc bnk bnn bnx bxb bxn bxx c-- caa cab cac cak can cax cba cbb cbc cbk cbn cbx cca ccb ccc cck ccn ccx cka ckb ckc ckx cn- cna cnb cnc cnn cnx cxc cxk cxx ka- kaa kab kac kak kan kax kba kbb kbc kbk kbn kbx kca kcb kcc kck kcn kcx kkb kkc kkk kkn kn- kna knc knk knn knx naa nab nac nak nan nax nba nbb nbc nbk nbn nbx nca ncb ncc nck ncn ncx nka nkc nkk nkn nna nnb nnc nnk nnn nxc xaa xac xak xan xbc xbx xcb xcx xkb xna xnc xnk xxx

-ana a-ak aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aack aacn aaka aana abaa abab abac abak aban abax 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 anax anba anbb anca ancc ank- anka anna annb axan ba-x 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 caxa cbac cbax cbbc cbca cbcc cbcn cbka cbkn cbna cbxa ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc ckac ckan ckbc ckbx ckck ckcx cknb cknc cknx cnaa cnac cnbc cnna cxxx kaaa kaab kaak kaan kaba kabb kabc kacb kacc kaka kakc kakk kakn kakx kana kanb kann kanx kaxa kbaa kbab kbac kbak kbba kbbb kbbc kbbk kbca kbcb kbck kbkb kbkk kbna kbnn kbxb kbxx kc-x kcaa kcab kcac kcba kcbc kcbk kcbx kcca kccb kccc kcck kckc kckk kckn kckx kcnb kkaa kkac kkan kkba kkbb kkbn kkcb kkck kkcn kkkk kknb kknn kknx kkxa kkxk kkxx knaa knab knac knan knax knba knbb knbc knbn knca kncb knck kncn knkk knnb knnk knxx kxaa kxac kxba kxbn kxbx kxca kxkc kxkk kxkx kxna kxnc kxxk kxxn kxxx 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 xana xxxx

-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 annax axana babak baban babax babka bacab bacax bacca back- backa backn bakan bakka banak banan banba banca banck 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 xanax

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 caxaca caxcan 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 xaaxkax xxxxxxx

bakbakan bbbbbbbb kanakkan nananana

abakabaka baabaabaa

na-nana-na

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aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc