Knitted in a multiple of 15, + 4 sts.
Row 1 - Right side: K1, * k2tog, yo, k5, k2tog, yo, k6; repeat from * to last 3 sts, k2tog, yo, k1.
Row 2 and all wrong side rows: Purl all sts.
Row 3: K1, * yo, ssk, k4, k2tog, yo, k1, yo, ssk, k4; repeat from * to last 3 sts, yo, ssk, k1.
Row 5: K1, * k2tog, yo, k3, k2tog, yo, k3, yo, ssk, k3; repeat from * to last 3 sts, k2tog, yo, k1.
Row 7: K1, * yo, ssk, k2, k2tog, yo, k5, yo, ssk, k2; repeat from * to last 3 sts, yo, ssk, k1
Row 9: K1, * k2tog, yo, k1, k2tog, yo, k2, k2tog, yo, k3, yo, ssk, k1; repeat from * to last 3 sts, k2tog, yo, k1.
Row 11: K1, * yo, ssk, k4, k2tog, yo, k1, yo, ssk, k4; repeat from * to last 3 sts, yo, ssk, k1.
Row 13: K1, * k2tog, yo, k3, k2tog, yo, k3, yo, ssk, k3; repeat from * to last 3 sts, k2tog, yo, k1.
Row 15: K1, * yo, ssk, k2, k2tog, yo, k5, yo, ssk, k2; repeat from * to last 3 sts, yo, ssk, k1.
Row 16: Purl all sts.
Repeat rows 9 - 16.

Knitting abbreviations:
Knit: K | Purl: P | Yarn over: Yo | Knit 2 sts together: K2tog | Slip slip knit: Ssk.