1 0   0.5   1   1.5   2   2.5   3   3.5   4
2 0.5   1   1.5   2   2.5   3   3.5   4   4.5
3 1   1.5   2   2.5   3   3.5   4   4.5   5
4 1.5   2   2.5   3   3.5   4   4.5   5   5.5
5 2   2.5   3   3.5   4   4.5   5   5.5   6
6 2.5   3   3.5   4   4.5   5   5.5   6   6.5
7 3   3.5   4   4.5   5   5.5   6   6.5   7
8 3.5   4   4.5   5   5.5   6   6.5   7   7.5
9 4   4.5   5   5.5   6   6.5   7   7.5   8
10