"Russ Cox" <[EMAIL PROTECTED]> wrote:

> Here are the real rules:
>
>       - a{0,n} can be replaced by a?a{0,n-1}
>       - a{m,n} can be replaced by aa{m-1,n-1}
>       - a{0,0} can be replaced by the empty string
>       - REPEAT until all the { } are gone
>
> This is just a complicated way of saying you
> can replace a{n,m} with n copies of "a" followed
> by m-n copies of "a?".
>
> Russ

Got it.  Thanks for your patience.  I'll be quiet now.

-Derek

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