[1]
 0 1 1
 1 1 1
 1 1 1
[2]
 1 1 0 1 0 1 1
 0 1 1 1 1 1 1
 1 1 1 1 1 0 1
 1 1 1 1 1 1 1
 1 1 1 1 1 1 0
 0 1 1 1 1 1 1