Eyelet Lace 87 in the round

PATTERN IN THE ROUND
Cast on a multiple of 18 stitches.
Round 1: Knit.
Round 2: Purl.
Round 3: Purl.
Round 4: Purl.
Round 5: *[K2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times, repeat from *.
Round 6: Knit.
Round 7: *[K2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times, repeat from *.
Round 8: Knit.
Repeat rounds 1-8.
Worked flat, see Eyelet Lace 87: Old Shale variation stitch