Shown with a cast-on count of 74 stitches.  

• Rows 29 and 53 (RS): Yo, k3, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 19 sts, k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k3, yo (multiple of 18 sts, plus 42).
• Rows 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, and 60: Knit.
• Rows 31, 35, 39, 43, 47, 51, 55, and 59: Yo, knit, yo (2 more sts).
• Rows 33 and 57: Yo, k3, yo, k1, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 4 sts, k1, yo, k1, k2, yo (multiple of 18 sts, plus 12).
• Row 37: Yo, k3, [yo, k1] twice, k2tog, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 7 sts, k2tog, [yo, k1] twice, k3, yo (multiple of 18 sts, plus 18).
• Row 41: Yo, k3, [yo, k1] 3 times, k2tog, k2tog, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 10 sts, k2tog, k2tog, [yo, k1] 3 times, k3, yo (multiple of 18 sts, plus 24).
• Row 45: Yo, k3, [yo, k1] 4 times, k2tog, k2tog, k2tog, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 13 sts, k2tog, k2tog, k2tog, [yo, k1] 4 times, k3, yo (multiple of 18 sts, plus 30).
• Row 49: Yo, k3, k2tog, [yo, k1] 5 times, k2tog, k2tog, k2tog, *k2tog, k2tog, k2tog, [yo, k1] 6 times, k2tog, k2tog, k2tog, repeat from * to last 16 sts, k2tog, k2tog, k2tog, [yo, k1] 5 times, k2tog, k3, yo (multiple of 18 sts, plus 36).