Shown with a cast-on count of 31 stitches.  

• Row 1 (RS): Yo, k1, yo, k2tog, k3, *k3, yo, sl2-k1-p2sso, yo, k4, repeat from * to last 5 sts, k2, k2tog, yo, k1, yo (multiple of 10 sts, plus 13).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 3: Yo, k2, yo, k3, sl2-k1-p2sso, *k3, yo, k1, yo, k3, sl2-k1-p2sso, repeat from * to last 5 sts, k3, yo, k2, yo (multiple of 10 sts, plus 15).
• Row 5: Yo, k4, yo, k2, sl2-k1-p2sso, *k2, yo, k3, yo, k2, sl2-k1-p2sso, repeat from * to last 6 sts, k2, yo, k4, yo (multiple of 10 sts, plus 17).
• Row 7: Yo, k6, yo, k1, sl2-k1-p2sso, *k1, yo, k5, yo, k1, sl2-k1-p2sso, repeat from * to last 7 sts, k1, yo, k6, yo (multiple of 10 sts, plus 19).
• Row 9: Yo, k8, yo, sl2-k1-p2sso, *yo, k7, yo, sl2-k1-p2sso, repeat from * to last 8 sts, yo, k8, yo (multiple of 10 sts, plus 21).
• Row 11: Yo, k1, yo, k3, sl2-k1-p2sso, k3, yo, k1, *yo, k3, sl2-k1-p2sso, k3, yo, k1, repeat from * to last 10 sts, yo, k3, sl2-k1-p2sso, k3, yo, k1, yo (multiple of 10 sts, plus 23).
• Row 13: Yo, k3, yo, k2, sl2-k1-p2sso, k2, yo, k2, *k1, yo, k2, sl2-k1-p2sso, k2, yo, k2, repeat from * to last 11 sts, k1, yo, k2, sl2-k1-p2sso, k2, yo, k3, yo (multiple of 10 sts, plus 25).
• Row 15: Yo, k5, yo, k1, sl2-k1-p2sso, k1, yo, k3, *k2, yo, k1, sl2-k1-p2sso, k1, yo, k3, repeat from * to last 12 sts, k2, yo, k1, sl2-k1-p2sso, k1, yo, k5, yo (multiple of 10 sts, plus 27).
• Row 17: Yo, k7, yo, sl2-k1-p2sso, yo, k4, *k3, yo, sl2-k1-p2sso, yo, k4, repeat from * to last 13 sts, k3, yo, sl2-k1-p2sso, yo, k7, yo (multiple of 10 sts, plus 29).
• Row 19: Yo, k4, k2tog, k3, yo, k1, yo, k3, sl2-k1-p2sso, *k3, yo, k1, yo, k3, sl2-k1-p2sso, repeat from * to last 13 sts, k3, yo, k1, yo, k3, k2tog, k4, yo (multiple of 10 sts, plus 31).