aaaa aaab aaal aaav aaba aabb aabl aala aall aalo aaoo aava abaa abab abal abb- abba abbb abbo abla ablo ablv aboa abob abol aboo abov abva alaa alal alao alb- alba albo all- alla alll allo aloa alol aloo alov alva alvo aoba aola avab aval avao avlb avva avvo baaa baal baba babb babo bala ball balo baol bava bbbb bblb blaa blab blob bloo boab boal boba bobb bobo bola boll bolo boob bool bova bovo laaa laal laba labo lala lall lalo lava lavo llao llll lloa lloo lo-v lob- loba lobb lobo lola loll lolo loob lool lovo lvov oall obal obba obbo obla obol olav olba olbo olla ollo olov ooaa ooba oola oolo oooo oval ovo- ovol ovoo vaal vala vall valo vava vlab vlba vola voll volo vool vvob vvvv