Shown with a cast-on count of 38 stitches.  

• Row 0 (WS): P38.
• Row 1: K1, *yo, k2tog, repeat from * to last st, k1.
• Rows 2 and 4: K1, purl to last st, k1.
• Row 3: Knit.
• Rows 5 and 17: K1, *k3tog, k4, yo, k1, yo, k4, repeat from * to last st, k1.
• Rows 6, 16, and 18: K1, *p3tog, p4, yo, p1, yo, p4, repeat from * to last st, k1.
• Rows 7, 9, and 15: K1, *p3tog, p4, yo, p1, yo, p4, repeat from * to last st, k1.
• Rows 8 and 14: K1, *k3tog, k4, yo, k1, yo, k4, repeat from * to last st, k1.
• Row 10: K1, *yo, k2tog, repeat from * to last st, k1.
• Rows 11 and 13: K1, purl to last st, k1.
• Row 12: Knit.