Shown with a cast-on count of 15 stitches.  

• Rows 1 and 11 (RS): P2, k13.
• Rows 2 and 12: P13, k2.
• Row 3: P2, k10, k2tog, yo, k1.
• Row 4: Yo, p2, p2tog, p9, k2.
• Row 5: P2, k8, k2tog, knit to last 2 sts, yo, k2.
• Row 6: P1, yo, p3, p2tog, p7, k2.
• Row 7: P2, k6, k2tog, k2, yo, k3.
• Row 8: P2, yo, p4, p2tog, p5, k2.
• Row 9: P2, k4, k2tog, k3, yo, k4.
• Row 10: P3, yo, p5, p2tog, p3, k2.
• Row 13: P2, k1, yo, ssk, k10.
• Row 14: P9, p2tog tbl, p2, yo, k2.
• Row 15: P2, k2, yo, k1, ssk, k8.
• Row 16: P7, p2tog tbl, p3, yo, p1, k2.
• Row 17: P2, k3, yo, k2, ssk, k6.
• Row 18: P5, p2tog tbl, p4, yo, p2, k2.
• Row 19: P2, k4, yo, k3, ssk, k4.
• Row 20: P3, p2tog tbl, p5, yo, p3, k2.