  0     0     0     0     0
#&gt; [16,]    0    0    0    0    0    0    0    0    0     0     0     0     0
#&gt; [17,]    0    0    0    0    0    0    0    0    0     0     0     0     0
#&gt; [18,]    0    0    0    0    0    0    0    0    0     0     0     0     0
#&gt; [19,]    1    0    0    1    0    0    1    0    0     0     0     0     0
#&gt; [20,]    0    0    0    0    0    0    0    0    0     1     0     0     1
#&gt; [21,]    0    0    0    0    0    0    0    0    0     0     0     0     