Shown with a cast-on count of 29 stitches.  

• Rows 1, 3, 5, 7, 63, 65, 67, and 69 (RS): P2, k12, p1, k12, p2.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, and 70: K2, p12, k1, p12, k2.
• Rows 9 and 41: P2, 4/4 LC, k4, p1, k4, 4/4 RC, k2.
• Rows 11 and 43: P2, k4, 4/4 LC, p1, 4/4 RC, k4, k2.
• Rows 13, 15, 17, 19, 21, 23, 25, 45, 47, 49, 51, 53, 55, and 57: P2, 1/3 RC, k8, p1, k8, 1/3 LC, p2.
• Rows 27 and 59: P2, k4, 4/4 RC, p1, 4/4 LC, k4, k2.
• Rows 29 and 61: P2, 4/4 RC, k4, p1, k4, 4/4 LC, k2.
• Rows 31, 33, 35, 37, and 39: P2, k8, 1/3 LC, p1, 1/3 RC, k8, p2.
• Repeat rows 9-40.