a-ak a-be a-ya aaaa aaab aaae aaba aabb aaby aaea aaka aake abaa abab abae abak abay abb- abba abbb abbe abby abee abey abye abyy aeby aeka akaa akae akay akee akey akka ayay ayya baaa baak baba babb babe baby baek bak- baka bake baya baye bbay bbbb bbeb beak beay beba bebb bebe beby beeb beek beey beka beke beya beye beyk byke eaba ebay ebba ebby ebya eeby eeea eeee eeka eeke eka- ekab ekeb ekek ekka eyak eyeb eyey eyke kaaa kaab kaak kaay kaba kabb kabe kaby kaka kake kakk kaya kaye kbaa kbab kbae kbak kbay kbba kbbb kbbe kbbk kbeb kbee kbek kbey kbkb kbkk kbky kbya kbyb kea- keak keay keba kebb kebe keek keka kekb keke keya keyb keye keyy kkaa kkay kkba kkbb kkbe kkea kkkk kkya kkyy kyaa kyak kyay kyba kybb kybe kyby kyee kyka kyke kykk kyky kyya kyyk kyyy yaak yaba yaka yaya yeek yeka yeke yeye ykey yyyy