Eyelet Lace 85 in the round

PATTERN IN THE ROUND
Cast on a multiple of 18 stitches.
Round 1: Color A, knit.
Round 2: Color A, purl.
Round 3: Color B, knit.
Round 4: Color B, knit.
Round 5: Color B, *[k2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times; repeat from *.
Round 6: Color B, knit.
Repeat rounds 1-6.
Worked flat, see Eyelet Lace 85: Wave stitch