a-be aaaa aaab aaae aaal aaav aaba aabb aabl aaea aaev aala aale aall aava abaa abab abae abal abb- abba abbb abbe abee abel abla able ablv abva aela aeva alaa alae alal alb- alba albe alea alee alev all- alla alle alll alva avab aval avea avel avlb avva baaa baal baba babb babe bael bala bale ball bava bave bbbb bbeb bblb beal beav beba bebb bebe beeb beel bela bele bell blaa blab blae blea bleb blee e-la eaba eala eale eave ebal ebba ebel ebla eeea eeee eele eelv eeva el-b elab elal elba elbe elea elee elev ella elle elva elve evae eval evea evel evla laaa laal laba labe lael lala lale lall lava lave leaa leal leba leea leel lela lele lell lev- leva leve llll lvea vaal vala vale vall vava veal veba veel vel- vela vele vell veve vlab vlba vvvv