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

B = []
for i in range(N):
    for _ in range(K):
        row = []
        for j in range(N):
            row.extend([A[i][j]] * K)
        B.append(''.join(row))

for row in B:
    print(row)