n, k = map(int, input().split())
a = [input() for _ in range(n)]

ans = [["" for _ in range(n * k)] for _ in range(n * k)]
for i in range(n * k):
    for j in range(n * k):
        ans[i][j] = a[i // k][j // k]

for ans_ in ans:
    print("".join(ans_))