Shown with a cast-on count of 28 stitches.  

• Row 1 (RS): *P1, k9, p2, k1, p1, repeat from *.
• Rows 2 and 20: *K1, p1, k2, p9, k1, repeat from *.
• Row 3: *P1, k3, sl1-k2tog-psso, k3, p2, 1-to-9 inc, p1, repeat from * (multiple of 20 sts).
• Row 4: *K1, p9, k2, p7, k1, repeat from *.
• Row 5: *P1, k2, sl1-k2tog-psso, k2, p2, k9, p1, repeat from * (multiple of 18 sts).
• Row 6: *K1, p1, k7, p1, k2, p5, k1, repeat from *.
• Row 7: *P1, k1, sl1-k2tog-psso, k1, p2, k9, p1, repeat from * (multiple of 16 sts).
• Row 8: *K1, p1, k7, p1, k2, p3, k1, repeat from *.
• Row 9: *P1, sl1-k2tog-psso, p2, k9, p1, repeat from * (multiple of 14 sts).
• Rows 10 and 12: *K1, p9, k2, p1, k1, repeat from *.
• Row 11: *P1, k1, p2, k9, p1, repeat from *.
• Row 13: *P1, 1-to-9 inc, p2, k3, sl1-k2tog-psso, k3, p1, repeat from * (multiple of 20 sts).
• Row 14: *K1, p7, k2, p9, k1, repeat from *.
• Row 15: *P1, k9, p2, k2, sl1-k2tog-psso, k2, p1, repeat from * (multiple of 18 sts).
• Row 16: *K1, p5, k2, p1, k7, p1, k1, repeat from *.
• Row 17: *P1, k9, p2, k1, sl1-k2tog-psso, k1, p1, repeat from * (multiple of 16 sts).
• Row 18: *K1, p3, k2, p1, k7, p1, k1, repeat from *.
• Row 19: *P1, k9, p2, sl1-k2tog-psso, p1, repeat from * (multiple of 14 sts).