row a [0,1,0,0,0,0]
row b [1,0,0,5,0,0]
row c[2,0,0,0,0,0]
row d[0,5,0,0,1,1]
row e[0,3,0,0,0,4]
row f[0,0,0,1,4,0]
row a [0,1,0,0,0,0]
row b [1,0,0,5,0,0]
row c[2,0,0,0,0,0]
row d[0,5,0,0,1,1]
row e[0,3,0,0,0,4]
row f[0,0,0,1,4,0]