N,K=map(int,input().split())
A=tuple(input() for i in range(N))
B=[["" for i in range(N*K)] for i 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 elm in B:
  print("".join(elm))