Having solved the match issue, Mirko faced another challenging problem. His mom ordered him to read an article about the newest couples on the Croatian show-biz scene in the "Moja Tajna" magazine. The article is written in a very small font size which Mirko cannot read. Luckily, Mirko has a scanner in the closet which will enlarge the article for him.

The article is a matrix of characters with $R$ rows and $C$ columns. The characters are letters of the English alphabet, digits and the character . (period). Mirko's scanner supports two parameters, $ZR$ and $ZC$. It substitutes each character it scans with a matrix of $ZR$ rows and $ZC$ columns, where all entries are equal to the scanned character.

Mirko realized his scanner's software no longer works so he needs your help.

Input Specification

The first row contains four integers, $R$, $C$, $ZR$ and $ZC$. $R$ and $C$ are between $1$ and $50$, while $ZR$ and $ZC$ are between $1$ and $5$.

Each of the following $R$ rows contains $C$ characters each, representing the article from "Moja Tajna".

Output Specification

The output should be a matrix of characters with $R\cdot ZR$ rows and $C\cdot ZC$ columns, the enlarged article.

Sample Input 1

3 3 1 2
.x.
x.x
.x.

Sample Output 1

..xx..
xx..xx
..xx..

Sample Input 2

3 3 2 1
.x.
x.x
.x.

Sample Output 2

.x.
.x.
x.x
x.x
.x.
.x.