..
............................................................
...........................................
_...._...._...._...._...._...._...._...._...._...._...._....
_...._...._...._...._
............................................................
...........................................
_...._...._...._...._...._...._...._...._...._...._...._....
_...._...._...._...._
............................................................
.......................................
_...._...._...._...._...._...._...._...._...._...._...._....
_...._...._...._...._
............................................................
.......................................