a-ya a-yo aaaa aaab aaac aaba aabb aabc aaby aaca aacb aacc aaco aacy aaoo abaa abab abac abag abay abb- abba abbb abbo abby abca abcb abcc aboa abob aboo aboy abyc abyy acaa acab acac acag acba acca accc acco accy acga acoa acog acoy ag-o agac agag agao agay agba agbo agca agcc agco agcy agga aggy agob agog agoo agya aoba aoca ay-o ayao ayay ayca ayoo ayya baaa baba babb babo baby bac- baca bacc baco baga bagg bago bagy baya bayg bayo bbay bbbb bbga bboy bbyo bcaa bcbc bcbg bcca bccc bgca boab boac boag boba bobb bobo boby boca boco boga bogg bogo bogy boob booc boog boya boyg boyo bygg bygo byoa byob byoc c-bo caaa caab caac caba cabg cabo caby cac- caca cacc caco caga cagg cago cagy cayo cbac cbbc cbca cbcc cbga cbgb ccaa ccab ccac ccag ccba ccbc ccca cccb cccc ccga ccgc ccob ccoc cgac cgcc cgcg coag coba cobb cobo coby coca coco cogo coob coya coyo cya- cyaa cyba cybb cybc cybo cyc- cyca cycb cycc cygb cyoa cyy- cyyc gaba gabb gabo gaby gacy gaga gagg gago gaya gayo gbag gbbo gc-c gcaa gcbc gccc gcoa gggg goba gobo goby goca goga gogo goog goya obay obba obbo obby oboy ocab ocac ocbc occa occc ocga ogb ogba oggy ogoa ogog ooaa ooba ooby oooo yaba yabo yacc yaco yacy yaga yago yaya yayo ycab ycao yccc yoba yobo yoga yogo yoyo yyyy