Shown with a cast-on count of 22 stitches.  

• Rows 1, 5, 17, and 21 (RS): K1, yo, [ssk, k2tog, [yo] twice] 4 times, ssk, k2tog, yo, k1.
• Rows 2, 6, 18, and 22: P4, [k1, p3] 3 times, k1, p5.
• Rows 3 and 19: K1, [k2tog, [yo] twice, ssk] 5 times, k1.
• Rows 4, 16, and 20: P2, [k1, p3] 5 times.
• Rows 7 and 15: K1, [k2tog, [yo] twice, ssk] twice, k4, [k2tog, [yo] twice, ssk] twice, k1.
• Row 8: P2, k1, p3, k1, p7, [k1, p3] twice.
• Rows 9 and 13: K1, yo, ssk, k2tog, [yo] twice, ssk, k8, k2tog, [yo] twice, ssk, k2tog, yo, k1.
• Rows 10 and 14: P4, k1, p11, k1, p5.
• Row 11: K1, [k2tog, [yo] twice, ssk, k4] twice, k2tog, [yo] twice, ssk, k1.
• Row 12: P2, [k1, p7] twice, k1, p3.