String theory and a mosaic

These are 4 tiles done with the same simple string - simply two curved lines. Once I had the lines on the first tile done I lined them up so all 4 tiles were the same. There are several different patterns you can make when you line these tiles up together.

The tangles were done fairly quickly. There are a few challenges I've missed over the last few weeks so I used several of those tangles in these tiles. There are only two tangles on each tile. in the upper left - Ratoon and A-Frame, upper right - Burtz and Onion Drops, lower right - Wigwag and Bran, lower left - Ditto and Floorz