code               0
code               1
code               0
code               1
code               0
code               1
code               0
code               1
code               0
code     1         1
code     1         0
code     1         1
code     1         0
code     1         1
code     1         0
code     1         1
code     1         0
code     1         1
code     1         0
code     2         1
code     2         0
code     2         1
code     2         0
code     2         1
code     2         0
code     2         1
code     2         0
code     2         1
code     2         0
code     3         1
code     3         0
code     3         1
code     3         0
code     3         1
code     3         0
code     3         1
code     3         0
code     3         1
code     3         0
code     4         1
code     4         0
code     4         1
code     4         0
code     4         1
