N, K = map(int, input().split())
A = []
for i in range(N):
    A.append(list(input()))
    
ans = [[0] * (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 a in ans:
    print(*a, sep="")