a-ya a-yo aaaa aaab aaba aabb aaby aaoo abaa abab abag abay abb- abba abbb abbo abby aboa abob aboo aboy abyy ag-o agag agao agay agba agbo agga aggy agob agog agoo agya aoba ay-o ayao ayay ayoo ayya baaa baba babb babo baby baga bagg bago bagy baya bayg bayo bbay bbbb bbga bboy bbyo boab boag boba bobb bobo boby boga bogg bogo bogy boob boog boya boyg boyo bygg bygo byoa byob gaba gabb gabo gaby gaga gagg gago gaya gayo gbag gbbo gggg goba gobo goby goga gogo goog goya obay obba obbo obby oboy ogb ogba oggy ogoa ogog ooaa ooba ooby oooo yaba yabo yaga yago yaya yayo yoba yobo yoga yogo yoyo yyyy