a-be a-ya a-yo aaaa aaab aaae aaav aaba aabb aaby aaea aaev aaoe aaoo aava abaa abab abae abay abb- abba abbb abbe abbo abby abee abey aboa abob aboo abov aboy abva abye abyy aeby aeva aoba avab avao avay avea aveo avey avoy avva avvo avvy avye ay-o ayao ayay ayoo ayya baaa baba babb babe babo baby bava bave baya baye bayo bbay bbbb bbeb bboy bbyo beav beay beba bebb bebe bebo beby beeb beey beo- bevo bevy beya beye boab boba bobb bobe bobo boby boea boee boeo boey boob booe bova bove bovo bovy boya boye boyo byoa byob eaba eave ebay ebba ebbo ebby eboe eboo eboy ebya eeby eeea eeee eeva evae evea evey evoe evoo eyeb eyey o-eo obay obba obbo obby obea obey oboe oboy oeya oeye oeyo ooaa ooba oobe ooby oooo ovee ovey ovo- ovoo oyee vava vaya vaye vbyv veba veve vevo vevy veye voay voye vvob vvvv yaba yabo yava yave yaya yayo yeve yeye yeyo yoav yoba yobo yova yove yoye yoyo yyyy