program yukicoder_2728
  use, intrinsic :: iso_fortran_env
  implicit none
  integer(int32) :: n, k
  character, allocatable :: grids(:, :), ans(:, :)
  integer(int32) :: i, j
  read(input_unit, *) n, k
  allocate(grids(0:n-1, 0:n-1))
  do i = 0, n - 1
     read(input_unit, '(*(a1))') grids(i, :)
  end do
  allocate(ans(0:k*n-1, 0:k*n-1))
  do i = 0, k * n - 1
     do j = 0, k * n - 1
        ans(j, i) = grids(j / k, i / k)
     end do
  end do
  do i = 0, k * n - 1
     write(output_unit, '(*(a1))') ans(i, :)
  end do
end program yukicoder_2728