From Omas Strickgeheimnisse.
I hadn't come across this way of knitting into multiple yarnovers before - each one is knitted through the back of the loop.
Shown with a cast-on count of 24 stitches.
1 2 3 4 5 Horizontal repeats
1 2 3 4 5 Vertical repeats
Swatch photo uploaded by chrisfourfalcon