Shown with a cast-on count of 35 stitches.  

• Row 1 (RS): *K1, yo, p5, k1, k2tog, ssk, k1, p5, yo, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: *K1, yo, p4, k1, k2tog, k2, ssk, k1, p4, yo, repeat from * to last st, k1.
• Row 5: *K1, yo, p3, k1, k2tog, k4, ssk, k1, p3, yo, repeat from * to last st, k1.
• Row 7: *K1, yo, p2, k1, k2tog, k6, ssk, k1, p2, yo, repeat from * to last st, k1.
• Row 9: *K1, yo, p1, k1, k2tog, k8, ssk, k1, p1, yo, repeat from * to last st, k1.
• Row 11: *K1, yo, p2, k1, ssk, k6, k2tog, k1, p2, yo, repeat from * to last st, k1.
• Row 13: *K1, yo, p3, k1, ssk, k4, k2tog, k1, p3, yo, repeat from * to last st, k1.
• Row 15: *K1, yo, p4, k1, ssk, k2, k2tog, k1, p4, yo, repeat from * to last st, k1.