def make_board(board_string):
    """Make a board from a string.

    For example::

        >>> board = make_board('''
        ... N C A N E
        ... O U I O P
        ... Z Q Z O N
        ... F A D P L
        ... E D E A Z
        ... ''')

        >>> len(board)
        5

        >>> board[0]
        ['N', 'C', 'A', 'N', 'E']
    """

    letters = board_string.split()

    board = [
        letters[0:5],
        letters[5:10],
        letters[10:15],
        letters[15:20],
        letters[20:25],
    ]

    return board