Shown with a cast-on count of 40 stitches.  

• Row 1 (RS): P7, [p6, k1, p6] twice, p7.
• Row 3 (RS): P7, [p5, k3, p5] twice, p7.
• Row 5 (RS): P7, [p5, M1L, k1, M1L, k1, M1L, k1, M1L, p5] twice, p7 (48 sts).
• Row 7 (RS): P7, [p5, k1, M1L, k1, M1L, k3, M1L, k1, M1L, k1, p5] twice, p7 (56 sts).
• Row 9 (RS): P7, [p3, p2tog, k2, M1L, k1, M1L, k2, M1Lp, k1, M1Lp, k2, M1L, k1, M1L, k2, p2tog, p3] twice, p7 (64 sts).
• Row 11 (RS): P7, [p2, p2tog, k7, M1Lp, p1, k1, p1, M1Lp, k7, p2tog, p2] twice, p7.
• Row 13 (RS): P7, [p1, p2tog, k2, k3tog, k2, M1Lp, p2, k1, p2, M1Lp, k2, k3tog, k2, p2tog, p1] twice, p7 (56 sts).
• Row 15 (RS): P7, [p2tog, k1, k3tog, k1, M1Lp, p3, k1, p3, M1Lp, k1, k3tog, k1, p2tog] twice, p7 (48 sts).
• Row 17 (RS): P7, [p1, k3tog, p4, k1, p4, k3tog, p1] twice, p7 (40 sts).