a-a a-b a-c aaa aab aac aak aar ab- aba abb abc abk abr ac- aca acb acc ack acr aka akb akc akk akr ar- ara arb arc ark arr baa bab bac bak bar bba bbb bbc bbk bbr bca bcb bcc bck bcr bka bkb bkc bkk bkr bra brb brk brr c-- caa cab cac cak car cba cbb cbc cbk cbr cca ccb ccc cck ccr cka ckb ckc cra crb crc crk crr ka- kaa kab kac kak kar kba kbb kbc kbk kbr kca kcb kcc kck kcr kkb kkc kkk kkr kra krc krk krr ra- raa rab rac rak rar rba rbb rbc rbk rbr rca rcb rcc rcr rkb rkc rkk rra rrb rrc rrk rrr

a-ak aaaa aaab aaac aaar aaba aabb aabc aaca aacb aacc aack aacr aaka aara aarc abaa abab abac abak abar abb- abba abbb abbr abca abcb abcc abcr abra abrc acaa acab acac acar acba acca accc acr- acra acrc acrr akaa akar akca akka akr- akra arab arac arak arar arba arc- arca arka arr- arra arrc arrk arrr baaa baak baar baba babb babr bac- baca bacc back bak- baka bakr bar- bara barb barc bark barr bbbb bbrc bcaa bcar bcbc bcca bccc bcra brab brac brak brca brcb brka brkb brrr caaa caab caac caba cac- caca cacc cack cacr caka cara carb carc cark carr cbac cbar cbbc cbca cbcc cbcr cbka cbkr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccra ccrc ckac ckbc ckck ckrc crab crac crar crbc crca crcc crcr crkc kaaa kaab kaak kaar kaba kabb kabc kabr kacb kacc kaka kakc kakk kara karb kark karr kbaa kbab kbac kbak kbar kbba kbbb kbbc kbbk kbbr kbca kbcb kbck kbcr kbkb kbkk kbkr kbra kbrb kbrc kbrk kcaa kcab kcac kcar kcba kcbc kcbk kcbr kcca kccb kccc kcck kccr kckc kckk kckr kcrc kcrr kkaa kkac kkar kkba kkbb kkbr kkcb kkck kkcr kkkk kkrb kkrc kkrk kkrr krab krac krak krar krba krbb krbk krbr krca krcb krcc krka krkc krkk krkr krrb krrc krrk krrr raab raak raba rabb rabk rac- raca racc rack raka rakk rara rarb rark rbbb rbbr rcac rcbc rccb rccc rrrr

-aaa- aaarc aabaa aabba aabra aacbc abaab ababa abaca aback abaka abara abbac abbar abccc abkar abrac abrak abrar acaca acacb acack acar- acara accra acrab akaba akbar akkra akrak akrar ar-ab ara-c arab- araba araca arack arara arbab arbar arkar arrak b-r-k babak babar babka babra bacab bacar bacca back- backa bakar bakka bakra bakrc baraa barab barac barak barar barba barca bark- barka barra braak braca bracc brack brrar brrrr c-a-c ca-ca caaba cabra cacak cakra caraa carab carac carak carb- carck cark- carra ccccc craba crabb crack k-car k-rab kaaba kabaa kabab kabak kabar kabba kacar kakar kakka kakra karak karka kraak kraar krack kraka ra-ra raaba raack rabab rabac rabak rabba racak racka rakaa rakab rccar

aaaaba abacab abarca abarka abraka accara ackack ackbar acrack akarca akbaba akkaba akraba akraka aracar arbra arraba arrack baabaa baabar babarc babbar bacaba baccar bakara bakkar baraca baraka barara barbar barbra barcar barrak bbbbbb bracak bracca caback cabar cabara cabarr cakcak caraca carack carara carbak carcar cracca crack- cracka ka-bar kaback kabaka kabara kakara kakkak kakkar karaba karaca karaka karara karkaa karkar karrab karrar rababa racaka rakaca raraka

ack-ack arakaka baabarr babacar bac-cab bacara bacarra baccara backarc backbar bakarac barabra barakar barback barbara barrack bbbbbbb cabback caracca carraca carrack carrara cra-cra kabarak kacabac karkaar kra-kra krakaca

ababakar arc-back backrack bar-abba bar-back barabara bbbbbbbb caracara cararara karakara rack-bar

abakabaka baabaabaa backakra backarack crackback

crack-rack rackaracka

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc