import sys
input = sys.stdin.readline
N, K = map(int, input().split())
A = [input().strip() for _ in range(N)]
B = [["" for _ in range(N*K)] for _ in range(N*K)]
for i in range(N*K):
    for j in range(N*K):
        B[i][j] = A[i//K][j//K]
for b in B:
    print("".join(b))