Problem Statement

You are given four integers: $H$, $W$, $h$ and $w$ ($1 ≤ h ≤ H$, $1 ≤ w ≤ W$). Determine whether there exists a matrix such that all of the following conditions are held, and construct one such matrix if the answer is positive:

• The matrix has $H$ rows and $W$ columns.
• Each element of the matrix is an integer between $-10^9$ and $10^9$ (inclusive).
• The sum of all the elements of the matrix is positive.
• The sum of all the elements within every subrectangle with $h$ rows and $w$ columns in the matrix is negative.

Constraints

• $1 ≤ h ≤ H ≤ 500$
• $1 ≤ w ≤ W ≤ 500$

Input

Input is given from Standard Input in the following format:

H W h w

Output

If there does not exist a matrix that satisfies all of the conditions, print No.

Otherwise, print Yes in the first line, and print a matrix in the subsequent lines in the following format:

a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}

Here, $a_{ij}$ represents the $(i,\ j)$ element of the matrix.