Shown with a cast-on count of 34 stitches.  

• Row 1 (RS): K15, kfb, kfb, kfb, kfb, k15 (38 sts).
• Row 2: K15, p4, p4, k15.
• Row 3: K15, k1, M1R, k2, M1L, k1, k1, M1R, k2, M1L, k1, k15 (42 sts).
• Row 4: K15, p6, p6, k15.
• Row 5: K15, k1, M1R, k4, M1L, k1, k1, M1R, k4, M1L, k1, k15 (46 sts).
• Row 6: K15, p7, M1Rp, p1, p1, M1Lp, p7, k15 (48 sts).
• Row 7: K15, k1, M1R, k7, M1L, k1, k1, M1R, k7, M1L, k1, k15 (52 sts).
• Row 8: K15, p11, p11, k15.
• Row 9: K15, k1, M1R, k9, M1L, k1, k1, M1R, k9, M1L, k1, k15 (56 sts).
• Row 10: K15, p13, p13, k15.