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I can't create formal grammar for the language like

$wcw$ where $w$ is the word in $\{a,b\}^\ast$ and $c$ is just a letter

Thanks!

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    Michael: In case the hint in my post was not sufficient to help you solve this, feel free to [ping](http://meta.stackexchange.com/questions/43019/how-do-comment-replies-work) me; so that we can discuss this further.2012-01-08

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