from itertools import product

N, K = map(int, input().split())
A = [input() for _ in range(N)]

B = [[""]*N*K for _ in range(N*K)]
for i, j in product(range(N*K), repeat=2):
  B[i][j] = A[i//K][j//K]

print(*map("".join, B), sep="\n")