Shown with a cast-on count of 20 stitches.  

• Row 1 (RS): *K1, yo, k2, ssk, p1, k2tog, k2, yo, repeat from *.
• Rows 2, 4, and 6: *P4, k1, p5, repeat from *.
• Row 3: *K2, yo, k1, ssk, p1, k2tog, k1, yo, k1, repeat from *.
• Row 5: *K3, yo, ssk, p1, k2tog, yo, k2, repeat from *.
• Row 7: *P1, k2tog, k2, yo, k1, yo, k2, ssk, repeat from *.
• Rows 8, 10, and 12: *P9, k1, repeat from *.
• Row 9: *P1, k2tog, k1, yo, k3, yo, k1, ssk, repeat from *.
• Row 11: *P1, k2tog, yo, k5, yo, ssk, repeat from *.