Shown with a cast-on count of 20 stitches.  

• Rows 1 and 33 (RS): [Yo, k2tog] 10 times.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36: Knit.
• Rows 3 and 35: [Yo, ssk] 10 times.
• Rows 5, 9, 13, and 21: [Yo, k2tog] twice, k2, [yo, k2tog] 4 times, k2, [yo, k2tog] twice.
• Rows 7, 11, 15, and 23: [Yo, ssk] twice, k2, [yo, ssk] 4 times, k2, [yo, ssk] twice.
• Row 17: [Yo, k2tog] twice, k12, [yo, k2tog] twice.
• Row 19: [Yo, ssk] twice, k12, [yo, ssk] twice.
• Row 25: [Yo, k2tog] 3 times, k2, [yo, k2tog] twice, k2, [yo, k2tog] 3 times.
• Row 27: [Yo, ssk] 3 times, k2, [yo, ssk] twice, k2, [yo, ssk] 3 times.
• Row 29: [Yo, k2tog] 4 times, k4, [yo, k2tog] 4 times.
• Row 31: [Yo, ssk] 4 times, k4, [yo, ssk] 4 times.