Free Knitting Stitch for an Openwork Slip Stitch. Cast on an even number of stitches and work over a four row repeat.
yo: yarn over
s: slip stitch
psso: pass the slipped stitch over
Cast on an even number of stitches
Row 1: Knit.
Row 2: KI, *p4, yo* repeat from * to* until last stitch, kl.
Row 3: K1, *yo, drop yarn over from previous row, s1kw, k3, psso the 3 knit stitches* repeat
from* to * until last stitch, k1.
Row 4: Purl.