Shown with a cast-on count of 20 stitches.  

• Row 1 (RS): K1, k2tog, yo, k4, yo, k2, p3, p3tog, p3, k2 (19 sts).
• Row 2: P2, k7, p6, p2tog, yo, k2.
• Row 3: K1, k2tog, yo, k5, yo, k2, p2, p3tog, p2, k2 (18 sts).
• Row 4: P2, k5, p7, p2tog, yo, k2.
• Row 5: K1, k2tog, yo, k6, yo, k2, p1, p3tog, p1, k2 (17 sts).
• Row 6: P2, k3, p8, p2tog, yo, k2.
• Row 7: K1, k2tog, yo, k7, yo, k2, p3tog, k2 (16 sts).
• Row 8: P2, k1, p9, p2tog, yo, k2.
• Row 9: K1, k2tog, yo, k3, p2tog, p3, k2, yo, k1, yo, k2 (17 sts).
• Row 10: P7, k4, p2, p2tog, yo, k2.
• Row 11: K1, k2tog, yo, k3, p2tog, p2, k2, yo, k3, yo, k2 (18 sts).
• Row 12: P9, k3, p2, p2tog, yo, k2.
• Row 13: K1, k2tog, yo, k3, p2tog, p1, k2, yo, k5, yo, k2 (19 sts).
• Row 14: P11, k2, p2, p2tog, yo, k2.
• Row 15: K1, k2tog, yo, k3, p2tog, k2, yo, k7, yo, k2 (20 sts).
• Row 16: P13, k1, p2, p2tog, yo, k2.