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copied!<p>Well you should probably look at EBNF to show your grammar in a widely accepted manner.</p> <p>I think it would look something like this:</p> <pre><code>S = Combination { ',' Combination } . Combination = Hand ['+' | '-' Hand] . Hand = Card Card ["s" | "o"] . Card = rank [ color ] . </code></pre> <p>Where {} means 0 or more occurences, [] means 0 or 1 occurence and | means either whats left of | or whats right of |.</p> <p>So basically what this comes down to is a start symbol (S) that says that the parser has to handle from 1 to any number of combinations that are all separated by a ",".</p> <p>These combinations consist of a description of a card and then either a "+", a "-" and another card description or nothing.</p> <p>A card description consists of rank and optionally a color (spades, hearts, etc.). The fact that rank and color aren't capitalized shows that they can't be further divided into subparts (making them a terminal class). </p> <p>My example doesn't provide the offsuite/suite possibility and that is mainly because in you're examples one time the o/s comes at the very end "AK-ATo" and one time in the middle "A2s+". </p> <p>Are these examples your own creation or are they given to you from an external source (read: you can't change them)? </p> <p>If you can change them I would strongly recommend placing those at one specified position of a combination (for example at the end) to make creating the grammar and ultimately the parsing a lot easier.</p>

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