Write a program that takes a positive integer ~n~ (where ~n≤10^{3}~) as input.

Print a table with ~n~ rows, where each row contains ~n~ consecutive integers starting from ~i~, where ~i~ is the row number.

Input:

• A positive integer ~n~.

Output:

• Print the table of numbers as described.

Sample Input

4

Sample Output

1 2 3 4
2 3 4 5
3 4 5 6
4 5 6 7