Why does it say there's a banned word in my post?

I got a notice there was a banned word in my post but didn't tell me what it was. It wouldn't let me post. I used just normal words, so what's the story?

I guess you cant use the word c o u p o n s in our posts. Thanks for putting up w/ my long separate posts under a different topic, I couldnt figure out why I was banned.

http://www.refugees.bratfree.com/read.php?9,284583,page=3

The banned word thread is closed unfortunately. I have found a couple:

p-r-u-n-e-s
P-r-a-d-a

I'm wondering if we should have an open thread in the office where we collect them?

A lot of them were put in the list when we had a spammer invasion.
Might be time to reevaluate the list now that all posters must be mod approved.

There are other ones in there that were added due to trolls and such.

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“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”