Shown with a cast-on count of 33 stitches.  

• Rows 1 and 9 (RS): Knit.
• Rows 2 and 10: Purl.
• Row 3: *K1, yo, ssk, k11, k2tog, yo, repeat from * to last st, k1.
• Row 4: *P1, yo, p1, p2tog, p9, ssp, p1, yo, repeat from * to last st, p1.
• Row 5: *K1, yo, k2, ssk, k7, k2tog, k2, yo, repeat from * to last st, k1.
• Row 6: *P1, yo, p3, p2tog, p5, ssp, p3, yo, repeat from * to last st, p1.
• Row 7: *K1, yo, k4, ssk, k3, k2tog, k4, yo, repeat from * to last st, k1.
• Row 8: *P1, yo, p5, p2tog, p1, ssp, p5, yo, repeat from * to last st, p1.
• Row 11: *K6, k2tog, yo, k1, yo, ssk, k5, repeat from * to last st, k1.
• Row 12: *P5, ssp, p1, yo, p1, yo, p1, p2tog, p4, repeat from * to last st, p1.
• Row 13: *K4, k2tog, k2, yo, k1, yo, k2, ssk, k3, repeat from * to last st, k1.
• Row 14: *P3, ssp, p3, yo, p1, yo, p3, p2tog, p2, repeat from * to last st, p1.
• Row 15: *K2, k2tog, k4, yo, k1, yo, k4, ssk, k1, repeat from * to last st, k1.
• Row 16: *P1, ssp, p5, yo, p1, yo, p5, p2tog, repeat from * to last st, p1.