Based on a Shetland lace stitch.
Special operation: Here I've used the slip 1 symbol to mean knit down into the yarnover hole (purl on WS).
The wrong side rows could be knitted rather than purled.
The pattern looks best seen from a distance. The large holes remind me of the open beaks of chicks in the nest.
Shown with a cast-on count of 21 stitches.