Shown with a cast-on count of 55 stitches.  

• Row 1 (RS): [K1, p1] 3 times, knit to last 6 sts, [p1, k1] 3 times.
• Row 2: [K1, p1] 3 times, k1, p13, [k1, p13] twice, [k1, p1] 3 times, k1.
• Row 3: [K1, p1] 3 times, k1, [p1, k11, p1, k1] twice, p1, k11, [p1, k1] 4 times.
• Row 4: [K1, p1] 3 times, k3, p9, k2, [p1, k2, p9, k2] twice, [k1, p1] 3 times, k1.
• Row 5: [K1, p1] 3 times, k1, [p3, k7, p3, k1] twice, p3, k7, p3, [k1, p1] 3 times, k1.
• Row 6: [K1, p1] 3 times, k5, p5, k4, [p1, k4, p5, k4] twice, [k1, p1] 3 times, k1.
• Row 7: [K1, p1] 3 times, k1, [p5, k3, p5, k1] twice, p5, k3, p5, [k1, p1] 3 times, k1.
• Row 8: [K1, p1] 3 times, k7, p1, k6, [p1, k6, p1, k6] twice, [k1, p1] 3 times, k1.
• Row 9: [K1, p1] 3 times, k1, purl to last 7 sts, [k1, p1] 3 times, k1.
• Row 10: [K1, p1] 3 times, k1, purl to last 7 sts, [k1, p1] 3 times, k1.
• Row 11: [K1, p1] 3 times, k7, p1, [k13, p1] twice, k7, [p1, k1] 3 times.
• Row 12: [K1, p1] 3 times, k1, p5, k1, [p1, k1, p11, k1] twice, p1, k1, p5, [k1, p1] 3 times, k1.
• Row 13: [K1, p1] 3 times, k5, p2, k1, [p2, k9, p2, k1] twice, p2, k5, [p1, k1] 3 times.
• Row 14: [K1, p1] 3 times, k1, p3, k3, [p1, k3, p7, k3] twice, p1, k3, p3, [k1, p1] 3 times, k1.
• Row 15: [K1, p1] 3 times, k3, p4, k1, [p4, k5, p4, k1] twice, p4, k3, [p1, k1] 3 times.
• Row 16: [K1, p1] 4 times, k5, [p1, k5, p3, k5] twice, p1, k5, [p1, k1] 4 times.
• Row 17: [K1, p1] 3 times, k1, p6, k1, [p6, k1, p6, k1] twice, p6, [k1, p1] 3 times, k1.
• Row 18: [K1, p1] 3 times, knit to last 6 sts, [p1, k1] 3 times.