Knotted Cable
Two strokes in opposite directions that are very close together produce a structure called a Cable.
I found that two wavy cables that are half a period out of phase create a pattern that resembles a knot, so I named the pattern Knotted Cable.
![knotted cable digital marbling knotted cable](http://digital-marbling.de/wp-content/uploads/2020/11/knotted-cable.png)