Shown with a cast-on count of 18 stitches.  

• Row 1 (RS): P1, k3, yo, k2, ssk, k4, k2tog, k2, [yo, k1] twice (19 sts).
• Rows 2, 4, 42, and 44: P18, k1.
• Rows 3 and 43: P1, k18.
• Row 5: P1, k4, yo, k2, ssk, k2, k2tog, k2, yo, k3, yo, k1 (20 sts).
• Rows 6, 8, 38, and 40: P19, k1.
• Rows 7 and 39: P1, k19.
• Row 9: P1, k5, yo, k2, ssk, k2tog, k2, yo, k5, yo, k1 (21 sts).
• Rows 10, 12, 34, and 36: P20, k1.
• Rows 11 and 35: P1, k20.
• Row 13: P1, k2, MB, k3, yo, k2, ssk, k4, k2tog, k2, [yo, k1] twice (22 sts).
• Rows 14, 16, 30, and 32: P21, k1.
• Rows 15 and 31: P1, k21.
• Row 17: P1, k3, MB, k3, yo, k2, ssk, k2, k2tog, k2, yo, k3, yo, k1 (23 sts).
• Rows 18, 20, 26, and 28: P22, k1.
• Rows 19 and 27: P1, k22.
• Row 21: P1, k4, MB, k3, yo, k2, ssk, k2tog, k2, yo, k5, yo, k1 (24 sts).
• Rows 22 and 24: P23, k1.
• Row 23: P1, k23.
• Row 25: P1, k3, MB, k2, k2tog, yo, k1, yo, k2, ssk, k4, k2tog, k1, k2tog, yo, k1 (23 sts).
• Row 29: P1, k2, MB, k2, k2tog, yo, k3, yo, k2, ssk, k2, k2tog, k1, k2tog, yo, k1 (22 sts).
• Row 33: P1, k4, k2tog, yo, k5, yo, k2, ssk, k2tog, k1, k2tog, yo, k1 (21 sts).
• Row 37: P1, k3, k2tog, yo, k1, yo, k2, ssk, k4, k2tog, k1, k2tog, yo, k1 (20 sts).
• Row 41: P1, k2, k2tog, yo, k3, yo, k2, ssk, k2, k2tog, k1, k2tog, yo, k1 (19 sts).
• Row 45: P1, k1, k2tog, yo, k5, yo, k2, ssk, k2tog, k1, k2tog, yo, k1 (18 sts).
• Rows 46 and 48: P17, k1.
• Row 47: P1, k17.