Given the picture n⋅m, built from black and white pixels. Your task is to scale it up, replacing each pixel with the rectangle a⋅b, entirely consisting of the pixels of same color as the replaced pixel.
The first line contains four integers n,m,a,b (1≤n,m,a,b≤10).
i-th of the following n lines contain the binary string of length m, describing i-th row of the initial picture. 0 denotes the white pixel; 1 denotes the black pixel.
Print the scaled picture as the rectangle consisting of n⋅a rows and m⋅b columns.