Old Shale Lace Pattern

Pattern
Cast on a multiple of 18 stitches.
Row 1 (RS): Knit.
Row 2 (WS): Purl.
Row 3: *[K2tog] 3 times, [Yo, K1] 6 times, [K2tog] 3 times; rep from *.
Row 4: Purl.
Row 5: Knit.
Row 6: Knit.
Row 7: *[K2tog] 3 times, [Yo, K1] 6 times, [K2tog] 3 times; rep from *.
Row 8: Knit.
Repeat rows 1-8.