10
 0:  1  4  2  3  8  6  7  9  5  0
 1:  3  7  6  2  8  4  9  5  0  1
 2:  3  5  7  1  0  8  4  9  6  2
 3:  9  2  6  1  8  7  5  4  0  3
 4:  6  1  2  8  0  7  3  9  5  4
 5:  2  4  9  7  0  1  6  3  8  5
 6:  8  1  2  7  0  9  4  5  3  6
 7:  9  5  8  0  3  1  6  4  2  7
 8:  3  4  1  9  6  5  7  0  2  8
 9:  5  4  2  0  3  7  1  8  6  9