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Good afternoon! I am trying to figure out what would be the correct term for "Switchwords/Switchphrases in Portuguese.

For those who are not familiar with Switchwords/Switchphrases, the following websites explain what they mean:

http://www.mindpowernews.com/Switchwords.htm

http://amodernview.blogspot.com/2007/11/switchwords-tool-for...

Thank you so much! :)