Shown with a cast-on count of 21 stitches.  

• Rows 1 and 5 (RS): K1, *k1, p2, repeat from * to last 2 sts, k2.
• Rows 2 and 6: P2, *k2, p1, repeat from * to last st, p1.
• Row 3: K1, *k1, p2, yo, ssk, k2tog, yo, p2, repeat from * to last 2 sts, k2.
• Row 4: P2, *k2, p4, k2, p1, repeat from * to last st, p1.
• Rows 7 and 11: K1, *k1, p1, yo, p1, ssk, k2tog, p1, yo, p1, repeat from * to last 2 sts, k2.
• Rows 8 and 12: P2, *k1, p1, k1, p2, [k1, p1] twice, repeat from * to last st, p1.
• Row 9: K1, *k1, yo, p2, ssk, k2tog, p2, yo, repeat from * to last 2 sts, k2.
• Row 10: P2, *p1, [k2, p2] twice, repeat from * to last st, p1.