Shown with a cast-on count of 21 stitches.  

• Row 1 (RS): *K6, k2tog, k2, yo, k1, yo, k2, ssk, k6, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K5, k2tog, k2, yo, k3, yo, k2, ssk, k5.
• Row 5: K4, k2tog, k2, yo, k5, yo, k2, ssk, k4.
• Row 7: K3, k2tog, k2, yo, k7, yo, k2, ssk, k3.
• Row 9: K1, yo, k2, ssk, k11, k2tog, k2, yo, k1.
• Row 11: K2, yo, k2, ssk, k9, k2tog, k2, yo, k2.
• Row 13: K3, yo, k2, ssk, k7, k2tog, k2, yo, k3.
• Row 15: K4, yo, k2, ssk, k5, k2tog, k2, yo, k4.