Shown with a cast-on count of 38 stitches.  

• Rows 1 and 3 (RS): K1, [k1, p1] 18 times, k1.
• Rows 2 and 4: P1, [k1, p1] 18 times, p1.
• Rows 5, 9, 13, 17, 21, 25, 29, 33, 37, and 41: K2, p2, k4, p2, k1 tbl, p2, k12, p2, k1 tbl, p2, k4, p2, k2.
• Rows 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, and 42: P2, k2, p4, k2, p1 tbl, k2, p12, k2, p1 tbl, k2, p4, k2, p2.
• Rows 7, 15, 23, 31, and 39: K2, p2, 2/2 LC, p2, k1 tbl, p2, 4/4 RC, k4, p2, k1 tbl, p2, 2/2 LC, p2, k2.
• Rows 11, 19, 27, and 35: K2, p2, 2/2 LC, p2, k1 tbl, p2, k4, 4/4 LC, p2, k1 tbl, p2, 2/2 LC, p2, k2.
• Row 43: [K2tog, p2tog] 9 times, k2tog (19 sts).
• Rows 44, 46, 48, 50, 52, 54, 56, 58, 60, and 62: [P1, k1] 9 times, p1.
• Rows 45, 47, 49, 51, 53, 55, 57, 59, and 61: [K1, p1] 9 times, k1.