a-a a-b a-c aaa aab aac aar ab- aba abb abc abr ac- aca acb acc acr ar- ara arb arc arr baa bab bac bar bba bbb bbc bbr bca bcb bcc bcr bra brb brr c-- caa cab cac car cba cbb cbc cbr cca ccb ccc ccr cra crb crc crr ra- raa rab rac rar rba rbb rbc rbr rca rcb rcc rcr rra rrb rrc rrr

aaaa aaab aaac aaar aaba aabb aabc aaca aacb aacc aacr aara aarc abaa abab abac abar abb- abba abbb abbr abca abcb abcc abcr abra abrc acaa acab acac acar acba acca accc acr- acra acrc acrr arab arac arar arba arc- arca arr- arra arrc arrr baaa baar baba babb babr bac- baca bacc bar- bara barb barc barr bbbb bbrc bcaa bcar bcbc bcca bccc bcra brab brac brca brcb brrr caaa caab caac caba cac- caca cacc cacr cara carb carc carr cbac cbar cbbc cbca cbcc cbcr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccra ccrc crab crac crar crbc crca crcc crcr raab raba rabb rac- raca racc rara rarb rbbb rbbr rcac rcbc rccb rccc rrrr

-aaa- aaarc aabaa aabba aabra aacbc abaab ababa abaca abara abbac abbar abccc abrac abrar acaca acacb acar- acara accra acrab ar-ab ara-c arab- araba araca arara arbab arbar babar babra bacab bacar bacca baraa barab barac barar barba barca barra braca bracc brrar brrrr c-a-c ca-ca caaba cabra caraa carab carac carb- carra ccccc craba crabb ra-ra raaba rabab rabac rabba rccar

aaaaba abacab abarca accara aracar arbra arraba baabaa baabar babbar bacaba baccar baraca barara barbar barbra barcar bbbbbb bracca cabar cabara cabarr caraca carara carcar cracca rababa

baabarr babacar bac-cab bacara bacarra baccara barabra barbara bbbbbbb caracca carraca carrara cra-cra

bar-abba barabara bbbbbbbb caracara cararara

baabaabaa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc