def main():
    R, K = map(int, input().split())
    H, W = map(int, input().split())
    C = tuple(input() for _ in range(H))

    for i in range(W):
        n = 0
        while n < K:
            for j in range(H):
                print(C[j][i] * K, end='')
            print()
            n += 1

main()