Shown with a cast-on count of 19 stitches.  

• Row 1 (RS): K1, yo, ssk, p1, *k2tog, yo, k1, yo, ssk, p1, repeat from * to last 3 sts, k2tog, yo, k1.
• Rows 2 and 6: P3, *k1, p5, repeat from * to last 4 sts, k1, p3.
• Row 3: K2, yo, k1, p1, *k1, yo, k3, yo, k1, p1, repeat from * to last 3 sts, k1, yo, k2 (multiple of 8 sts, plus 9).
• Row 4: P4, *k1, p7, repeat from * to last 5 sts, k1, p4.
• Row 5: Ssk, yo, k2tog, p1, *ssk, yo, sl2-k1-p2sso, yo, k2tog, p1, repeat from * to last 4 sts, ssk, yo, k2tog (multiple of 6 sts, plus 7).
• Row 7: P1, *k2tog, yo, k1, yo, ssk, p1, repeat from *.
• Rows 8 and 12: *K1, p5, repeat from * to last st, k1.
• Row 9: P1, *k1, yo, k3, yo, k1, p1, repeat from * (multiple of 8 sts, plus 1).
• Row 10: *K1, p7, repeat from * to last st, k1.
• Row 11: P1, *ssk, yo, sl2-k1-p2sso, yo, k2tog, p1, repeat from * (multiple of 6 sts, plus 1).