Shown with a cast-on count of 42 stitches.  

• Row 1 (RS): *K21, repeat from *.
• Row 2: *K21, repeat from *.
• Row 3: *K2, k2tog, yo, k3tog, k2, yo, k1, yo, p1, yo, k1, yo, k2, sl1-k2tog-psso, yo, ssk, k2, repeat from *.
• Rows 4, 6, and 8: *K2, p8, k1, p8, k2, repeat from *.
• Row 5: *K2, k2tog, yo, k3tog, k1, yo, k1, yo, k1, p1, k1, yo, k1, yo, k1, sl1-k2tog-psso, yo, ssk, k2, repeat from *.
• Row 7: *K2, k2tog, yo, k3tog, yo, k1, yo, k2, p1, k2, yo, k1, yo, sl1-k2tog-psso, yo, ssk, k2, repeat from *.
• Repeat rows 3-8.