Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 21 sts (21 sts).
• Row 1: *P1, yo, k1, k2tog, k3, ssk, k1, yo, repeat from * to last st, p1.
• Row 3: *[P1, yo] twice, k2tog, sl2-k1-p2sso, ssk, yo, p1, yo, repeat from * to last st, p1.
• Row 5: K1, *k1, ssk, k1, yo, p1, yo, k1, k2tog, k2, repeat from *.
• Row 7: Ssk, *ssk, [yo, p1] 3 times, yo, k2tog, sl2-k1-p2sso, repeat from * to last 9 sts, ssk, [yo, p1] 3 times, yo, [k2tog] twice.