def print_matrix(m):
    print('\n'.join([''.join(['{:4}'.format(val) for val in row]) for row in m]))


matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
print('------- INITIAL -------')
print_matrix(matrix)
print('------- SHUFFLED -------')
print_matrix(shuffle_matrix(matrix))
print('------- DERANGED -------')
print_matrix(derange_matrix(matrix))