Given a starting position of a knight on an \(8 \times 8\) chessboard, your task is to find a sequence of moves such that it visits every square exactly once.

On each move, the knight may either move two steps horizontally and one step vertically, or one step horizontally and two steps vertically.

Input

• The only line has two integers \(x\) and \(y\): the knight's starting position.

Output

• Print a grid that shows how the knight moves (according to the example). You can print any valid solution.

Constraints

• \(1 \leq x,y \leq 8\)

Example

Sample input

2 1

Sample output

8 1 10 13 6 3 20 17  
11 14 7 2 19 16 23 4  
26 9 12 15 24 5 18 21  
49 58 25 28 51 22 33 30  
40 27 50 59 32 29 52 35  
57 48 41 44 37 34 31 62  
42 39 46 55 60 63 36 53  
47 56 43 38 45 54 61 64