Shown with a cast-on count of 30 stitches.  

• Row 1 (RS): [P1, k1] twice, p1, *p2, [k1, p1] 3 times, k2, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 2: [K1, p1] twice, k1, *p3, [k1, p1] twice, k3, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 3: [P1, k1] twice, p1, *p4, k1, p1, k4, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 4: [K1, p1] twice, k1, *p5, k5, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 5: [P1, k1] twice, p1, *p5, k5, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 6: [K1, p1] twice, k1, *k1, p4, k4, p1, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 7: [P1, k1] twice, p1, *p1, k1, p3, k3, p1, k1, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 8: [K1, p1] twice, k1, *k1, p1, k1, p2, k2, p1, k1, p1, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 9: [P1, k1] twice, p1, *p1, k1, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 10: [K1, p1] twice, k1, *k1, p1, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 11: [P1, k1] twice, p1, *p1, k1, p1, k2, p2, k1, p1, k1, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 12: [K1, p1] twice, k1, *k1, p1, k3, p3, k1, p1, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 13: [P1, k1] twice, p1, *p1, k4, p4, k1, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 14: [K1, p1] twice, k1, *k5, p5, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 15: [P1, k1] twice, p1, *k5, p5, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 16: [K1, p1] twice, k1, *k4, p1, k1, p4, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 17: [P1, k1] twice, p1, *k3, [p1, k1] twice, p3, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 18: [K1, p1] twice, k1, *k2, [p1, k1] 3 times, p2, repeat from * to last 5 sts, [p1, k1] twice, p1.
• Row 19: [P1, k1] twice, p1, *k1, p1, repeat from * to last 5 sts, [k1, p1] twice, k1.
• Row 20: [K1, p1] twice, k1, *p1, k1, repeat from * to last 5 sts, [p1, k1] twice, p1.