Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): *Yo, k4, ssk, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 3: *K1, yo, k3, ssk, repeat from *.
• Row 5: *K2, yo, k2, ssk, repeat from *.
• Row 7: *K3, yo, k1, ssk, repeat from *.
• Row 9: *K4, yo, ssk, repeat from *.
• Row 11: *K2tog, k4, yo, repeat from *.
• Row 13: *K2tog, k3, yo, k1, repeat from *.
• Row 15: *K2tog, k2, yo, k2, repeat from *.
• Row 17: *K2tog, k1, yo, k3, repeat from *.
• Row 19: *K2tog, yo, k4, repeat from *.