Shown with a cast-on count of 21 stitches.  

• Row 1 (RS): *K1, yo, k3, sl2-k1-p2sso, k3, yo, repeat from * to last st, k1.
• Rows 2, 4, 6, and 8: Purl.
• Row 3: *K1, k1, yo, k2, sl2-k1-p2sso, k2, yo, k1, repeat from * to last st, k1.
• Row 5: *K1, k2, yo, k1, sl2-k1-p2sso, k1, yo, k2, repeat from * to last st, k1.
• Row 7: *K1, k3, yo, sl2-k1-p2sso, yo, k3, repeat from * to last st, k1.