Eyelet Lace 94 in the round

PATTERN
Cast on a multiple of 18 stitches
Rounds 1-3: Knit.
Round 4: Purl.
Row 5: *[K2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times, repeat from *.
Round 6: Purl.
Repeat rows 1-6.

Worked flat, see: Old Shale Eyelet Lace 94