Shown with a cast-on count of 9 stitches.  

• Row 0 (WS): Sl1 wyif, k2, p3, k3.
• Row 1: Sl1 wyib, k2, M1R, k1, M1L, k1, M1R, k1, M1L, k3 (13 sts).
• Rows 2, 4, 6, 8, and 10: Sl1 wyif, k2, purl to last 3 sts, k3.
• Row 3: Sl1 wyib, k2, M1R, k3, M1L, k1, M1R, k3, M1L, k3 (17 sts).
• Row 5: Sl1 wyib, k2, M1R, k2, p1, k2, M1L, k1, M1R, k2, p1, k2, M1L, k3 (21 sts).
• Row 7: Sl1 wyib, k2, M1R, k7, M1L, k1, M1R, k7, M1L, k3 (25 sts).
• Row 9: Sl1 wyib, k2, M1R, k2, p1, k3, p1, k2, M1L, k1, M1R, k2, p1, k3, p1, k2, M1L, k3 (29 sts).
• Repeat rows 7-10.