a-ak a-be a-ya aaaa aaab aaae aaav aaba aabb aaby aaea aaev aaka aake aava abaa abab abae abak abay abb- abba abbb abbe abby abee abey abva abye abyy aeby aeka aeva akaa akae akay akee akey akka avab avay avea avey avva avvy avye ayay ayya baaa baak baba babb babe baby baek bak- baka bake bava bave baya baye bbay bbbb bbeb beak beav beay beba bebb bebe beby beeb beek beey beka beke bevy beya beye beyk byke eaba eave ebay ebba ebby ebya eeby eeea eeee eeka eeke eeva eka- ekab ekeb ekek ekka evae evea evey evvk eyak eyeb eyey eyke kaaa kaab kaak kaay kaba kabb kabe kaby kaka kake kakk kava kavb kave kavv kaya kaye kbaa kbab kbae kbak kbay kbba kbbb kbbe kbbk kbeb kbee kbek kbev kbey kbkb kbkk kbkv kbky kbva kbvb kbya kbyb kea- keak keay keba kebb kebe keek keka kekb keke keva keve keya keyb keye keyy kkaa kkay kkba kkbb kkbe kkea kkkk kkvv kkya kkyy kvab kvak kvay kvea kvvv kvyb kvye kyaa kyak kyay kyba kybb kybe kyby kyee kyka kyke kykk kykv kyky kyva kyya kyyk kyyy vaka vake vava vaya vaye vayk vbyv veak veba veka veke veve vevy veye vvvv vyke yaak yaba yaka yava yave yaya yeek yeka yeke yeve yeye ykey yyyy