Shown with a cast-on count of 15 stitches.  

• Rows 1 and 3 (WS): P15.
• Row 2: Ssk, k4, yo, k3, yo, k4, k2tog.
• Row 4: Ssk, k5, yo, k1, yo, k5, k2tog.
• Rows 5, 7, 9, 11, 13, 15, 17, and 19: P7, k1, p7.
• Rows 6 and 12: Ssk, k3, yo, k2, p1, k2, yo, k3, k2tog.
• Row 8: Ssk, k4, yo, k1, p1, k1, yo, k4, k2tog.
• Rows 10 and 16: Ssk, k2, yo, k3, p1, k3, yo, k2, k2tog.
• Row 14: Ssk, k1, yo, k4, p1, k4, yo, k1, k2tog.
• Row 18: Ssk, k1, yo, k4, p1, k5, yo, k2tog.
• Row 20: Ssk, k2, yo, k3, p1, k4, yo, k1, k2tog.