Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): [K2tog] twice, k2, yo, k1, yo, k5.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, and 18: Knit.
• Row 3: K1, [k2tog] twice, k2, yo, k1, yo, k4.
• Row 5: K2, [k2tog] twice, k2, yo, k1, yo, k3.
• Row 7: K3, [k2tog] twice, k2, yo, k1, yo, k2.
• Row 9: K4, [k2tog] twice, k2, yo, k1, yo, k1.
• Row 11: K5, [k2tog] twice, k2, yo, k1, yo.
• Row 13: K4, yo, k1, yo, k2, [ssk] twice, k1.
• Row 15: K3, yo, k1, yo, k2, [ssk] twice, k2.
• Row 17: K2, yo, k1, yo, k2, [ssk] twice, k3.
• Row 19: K1, yo, k1, yo, k2, [ssk] twice, k4.