Mod Rewrite Regex Syntax

Here's a sample of some code from my .htaccess file

RewriteRule ^TMP/Cat(.*)/(.*)$ /TMP/run.php?r=cat$1&c1=$2

How can I get this to return valid if the user types a url with ot without a trailing slash?
with my above example  /TMP/Cat1/2  works but  /TMP/Cat1/2/  does not
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RewriteRule ^TMP/Cat(.*)/(.*)/(.*)/(.*)$ /TMP/run.php?r=cat$1&c1=$2&c2=$3&o=$4
RewriteRule ^TMP/Cat(.*)/(.*)/(.*)$ /TMP/run.php?r=cat$1&c1=$2&o=$3
RewriteRule ^TMP/Cat(.*)/(.*)$ /TMP/run.php?r=cat$1&c1=$2

Anyway to consolidate this?

I don't want to have to add filler to my URLS.

i.e.  I want the following urls to work with one entry in my htaccess file if that is possible: (keep in mind my first question)

/TMP/Cat1/2
/TMP/Cat1/2/3
/TMP/Cat1/2/3/4

I don't want to have to write a url like this:

/TMP/Cat1/2/0/0  then have my script ignore the zeros as a workaround