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name = 'flower/2'
slug = 'words like +++--+++'
description = '''\
<p>Write a DCG with the starting symbol <code>flower</code> for the language <code>+<sup>n</sup>-<sup>m</sup>+<sup>n</sup></code>, where m > 0 and n ≥ 0.</p>
<p>Example words: <code>-</code>, <code>++-++</code>, <code>+---+</code>.</p>
'''
hint = {}
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