a-a a-b a-c a-z aaa aab aac aao aaz ab- aba abb abc abo abz ac- aca acb acc aco acz aoa aob aoc aoo az- aza azb azo azz baa bab bac bao baz bba bbb bbc bbo bca bcb bcc bco bcz boa bob boc boo boz bza bzo bzz c-- caa cab cac cao caz cba cbb cbc cbo cbz cca ccb ccc cco ccz co- coa cob coc coo coz cz- czc czo oaa oab oac oao ob- oba obb obc obo oc- oca ocb occ oco ocz oo- ooa oob ooc ooo oza ozo ozz zaa zab zac zao zaz zbb zbc zco zo- zoa zob zoc zoo zzz

aaaa aaab aaac aaba aabb aabc aaca aacb aacc aaco aaoo abaa abab abac abb- abba abbb abbo abca abcb abcc aboa abob aboo abza acaa acab acac acba acca accc acco acoa aoba aoca aza- azab azaz azca azo- azoo azza azzo baaa baaz baba babb babo bac- baca bacc baco bacz baza bazo bbbb bcaa bcbc bcca bccc bcoz boab boac boaz boba bobb bobo boca boco boob booc booz boza bozo bzzz c-bo caaa caab caac caba cabo cac- caca cacc caco caoz caza cazo cbac cbbc cbca cbcc ccaa ccab ccac ccba ccbc ccca cccb cccc ccob ccoc coba cobb cobo coca coco coob cozz obba obbo ocab ocac ocbc occa occc ooaa ooba oooo zaba zabo zaca zaza zobo zoco zoo- zoza zozo zzzz

-aaa- aaaoc aabaa aabba aacbc abaab ababa abaca abaco abaza abbac abccc aboab abobo abzac acaca acacb azaca baboo bacab bacao bacca bacco bacza bazac bazoo bo-bo boaco bobac boboc bocac bocao bocca bocoa booba booco booza bozab bozoo c-a-c ca-ca caaba cabob caboc cacao caco- cacoa caoba cazaa cazac ccccc co-bo co-co cocao cocc- cocco cocoa cooba cozza cozzo obaba ooooo oozoa za-za zacco zazzo zocca zocco zzzzz

aaaaba abacab abozzo acozac azzaba baabaa babaco bacaba baobab bbbbbb boabab boccob bococa booboo caccao cobbob cocco- cococo coocoo oooooo zababa zazaca zoozoo

abbozzo abzooba bac-cab bbbbbbb boo-boo cabozoa cocozza o-o-a-a

bbbbbbbb bo-bo-bo

abba-zaba baabaabaa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb bzzzzzzzzzzzzzz ccccccccccccccc