Shortening codes

You are given matrix z (n x m) and two integers x and y.

The value of x represents the displacement of matrix z in the horizontal direction (positive value is offset to the right, negative to left), and the value of y represents the shift of matrix z in the vertical direction (positive value upward, negative downward).

Input

Input consist of unknown number of test cases.

Each of them contain integers n and m (n,m<111). Then, in each of n lines are m numbers. Finally, at the end of each test appear x and y (-1000<x,y<1000).

Input ends when n=m=0.

Output

Matrix after shift (as in the example - with blank line at the end of each test).

Example

Input:
3 3
1 2 3
4 5 6
7 8 9
2 -1
3 4
6 7 8 5
10 11 12 9
2 3 4 1
-3 2
0 0
Output:
8 9 7
2 3 1
5 6 4

1 2 3 4
5 6 7 8
9 10 11 12