Zentangle ~ S,T,U Postcard

This challenge is to create a postcard with at least 1 "S", 1 "T" and 1 "U" tangle. You can choose from any tangle on the web or published in a book, as long as the tangles start with S, T and U. You can add as many tangles as you want, as long as you have at least 1 of each that starts with S, T, and U.

You can do a ZIA (Zentangle Inspired Artwork), or an abstract design or whatever you want. Black and white, colored, whatever.

Send naked to your partner. (No envelope).

Have fun with this one. Sender's choice, so you can start any time.