Shown with a cast-on count of 9 stitches.  

• Row 1 (RS): K1, yo, k1, [k2tog, yo] twice, k3 (10 sts).
• Rows 2 and 10: K4, [k1, p1] 3 times.
• Row 3: K1, yo, k3, [k2tog, yo] twice, k2 (11 sts).
• Rows 4 and 8: K3, p1, k1, p1, k3, p1, k1.
• Row 5: K1, yo, k5, [k2tog, yo] twice, k1 (12 sts).
• Row 6: K2, p1, k1, p1, k5, p1, k1.
• Row 7: K2tog, yo, k2tog, k1, [k2tog, yo] twice, k3 (11 sts).
• Row 9: K2tog, yo, k3tog, yo, k2tog, yo, k4 (10 sts).
• Row 11: K2tog, yo, k3tog, yo, k5 (9 sts).
• Row 12: K5, [k1, p1] twice.