a-a a-b a-c aaa aab aac aao aau ab- aba abb abc abo abu ac- aca acb acc aco acu aoa aob aoc aoo aou au- aua aub auc auo b-u baa bab bac bao bau bba bbb bbc bbo bbu bca bcb bcc bco bcu boa bob boc boo bou bua bub buc buo buu c-- caa cab cac cao cau cba cbb cbc cbo cbu cca ccb ccc cco ccu co- coa cob coc coo cou cua cub cuc cuo cuu oaa oab oac oao oau ob- oba obb obc obo obu oc- oca ocb occ oco ocu oo- ooa oob ooc ooo ou- oua ouc ouo ua- uaa uab uac uao uau uba ubb ubc ubo ubu uca ucb ucc uco ucu uoa uob uoc uoo uua uuc uuu

aaaa aaab aaac aaba aabb aabc aaca aacb aacc aaco aacu aaoo abaa abab abac abau abb- abba abbb abbo abca abcb abcc aboa abob aboo abou abua acaa acab acac acba acca accc acco accu acoa acou acu- acuo aoba aoca auaa auca baaa baba babb babo babu bac- baca bacc baco bau- bbau bbbb bcaa bcbc bcca bccc bcuc boab boac boba bobb bobo bobu boca boco bocu boob booc boua buba bubb bubo bubu buca bucc buco bucu c-bo caaa caab caac caba cabo cabu cac- caca cacc caco cauc cauo cbac cbbc cbca cbcc cbcu ccaa ccab ccac ccba ccbc ccca cccb cccc cccu ccob ccoc ccuc coba cobb cobo cobu coca coco cocu coob coua coub cuau cub- cuba cubb cuca cucc oaau obba obbo ocab ocac ocbc occa occc ooaa ooba oooo ouac oucc ouu- uabc uaca uaoc uaua ubac ubba ubbo uboc ucbc ucca ucua uocc uuoc uuuu

-aaa- aaaoc aabaa aabba aacbc abaab ababa ababu abaca abaco abbac abbou abccc aboab abobo acaca acacb acaua accub acou- acoua acouo acuba babau baboo babou bacab bacao bacca bacco bacu baubo bo-bo boaco bobac boboc bocac bocao bocca bocoa booba booco bouba bouca bubba bucca bucco c-a-c ca-ca caaba cabob caboc cacao cacau caco- cacoa cacu caoba cauac cauca cauco ccccc co-bo co-co cocao cocc- cocco cocoa cooba couac couba couco cuaba cubao cubo- cubub cuoco obaba ooooo ubobo uuuuu

aaaaba ababou abacab abucco acouo- aucuba baabaa babaco babacu baboua bacaba bacau baobab baucau bbbbbb boabab bobbau boccob bococa booboo boubou boucau bububu bucco- cabucu caccao cobbob cocco- cococo coocoo oooooo uacaba ucuuba

abacua bac-cab bau-bau bbbbbbb boo-boo cabouca cabouco cacuaco cauaua cou-cou o-o-a-a ocaucu ububboo

bbbbbbbb bo-bo-bo bu-ba-bu ubbubboo

abbabubba baabaabaa

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