N,K=map(int,input().split())
A=[input() for i in range(N)]
B=[[None]*N*K for x in range(N*K)]
for x in range(N*K):
    for y in range(N*K):
        B[x][y]=A[x//K][y//K]
for x in range(N*K):
    print(*B[x],sep="")