### COCI 2006/2007, Contest #4

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

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

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

### Input

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

### Output

```..xx..
xx..xx
..xx..
```

### Input

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

### Output

```.x.
.x.
x.x
x.x
.x.
.x.
```

Point Value: 5
Time Limit: 1.00s
Memory Limit: 32M