Shown with a cast-on count of 15 stitches.  

• Row 1 (RS): K1, (k1, p1, k1) in next st, *p3, (k1, p1, k1) in next st, repeat from * to last st, k1 (multiple of 6 sts, plus 5).
• Row 2: K4, p3tog, *k3, p3tog, repeat from * to last 4 sts, k4 (multiple of 4 sts, plus 9).
• Row 3: K1, p3, *(k1, p1, k1) in next st, p3, repeat from * to last st, k1 (multiple of 6 sts, plus 5).
• Row 4: K1, p3tog, *k3, p3tog, repeat from * to last st, k1 (multiple of 4 sts, plus 3).