Eyelet Lace 95: Old Shale Variation

PATTERN
Cast on a multiple of 18 stitches
Row 1 (RS): Knit
Row 2: Purl.
Row 3: *[K2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times, repeat from *.
Row 4: Purl.
Row 5: Knit.
Row 6: Knit.
Row 7: *[K2tog] 3 times, [yo, k1] 6 times, [k2tog] 3 times, repeat from *.
Row 8: Knit.
Repeat rows 1-8.
Related stitch pattern, see Eyelet Lace 95 in the round