Shown with a cast-on count of 28 stitches.  

• Rows 1 and 9 (RS): P1, *p1, yo, k2, ssk, k3, k2tog, k2, yo, p1, repeat from * to last st, p1.
• Rows 2 and 10: K1, *k1, p1, yo, p2, p2tog, p1, ssp, p2, yo, p1, k1, repeat from * to last st, k1.
• Row 3: P1, *p1, k2, yo, k2, k3tog, k2, yo, k2, p1, repeat from * to last st, p1.
• Row 4: K1, *k1, p3, yo, p2, p2tog, p4, k1, repeat from * to last st, k1.
• Row 5: P1, *p1, k3, k2tog, k2, yo, k4, p1, repeat from * to last st, p1.
• Row 6: K1, *k1, p5, yo, p2, p2tog, p2, k1, repeat from * to last st, k1.
• Row 7: P1, *p1, k1, k2tog, k2, yo, k6, p1, repeat from * to last st, p1.
• Row 8: K1, *k1, p7, yo, p2, p2tog, k1, repeat from * to last st, k1.
• Row 11: P1, *p1, k2, yo, k2, sl1-k2tog-psso, k2, yo, k2, p1, repeat from * to last st, p1.
• Row 12: K1, *k1, p4, ssp, p2, yo, p3, k1, repeat from * to last st, k1.
• Row 13: P1, *p1, k4, yo, k2, ssk, k3, p1, repeat from * to last st, p1.
• Row 14: K1, *k1, p2, ssp, p2, yo, p5, k1, repeat from * to last st, k1.
• Row 15: P1, *p1, k6, yo, k2, ssk, k1, p1, repeat from * to last st, p1.
• Row 16: K1, *k1, ssp, p2, yo, p7, k1, repeat from * to last st, k1.