Shown with a cast-on count of 35 stitches.  

• Row 1 (RS): [K1, p1] 17 times, k1.
• Row 2: [P1, k1] 17 times, p1.
• Row 3: K2, [M1R, k1, M1R, k1, M1R, k2] 4 times, [k1, M1L, k1, M1L, k1, M1L, k1] 4 times, k1 (59 sts).
• Rows 4, 14, and 16: P1, [k1, p1] 7 times, p29, [p1, k1] 7 times, p1.
• Row 5: K1, [k1, p1] 6 times, k2tog, yo, k29, yo, ssk, [p1, k1] 6 times, k1.
• Row 6: P1, [k1, p1] 7 times, p7, p2tog, p4, yo, p3, yo, p4, ssp, p7, [p1, k1] 7 times, p1.
• Row 7: K1, [k1, p1] 6 times, k8, ssk, k6, yo, k1, yo, k6, k2tog, k8, [p1, k1] 6 times, k1.
• Row 8: P1, [k1, p1] 7 times, p5, p2tog, p5, yo, p5, yo, p5, ssp, p5, [p1, k1] 7 times, p1.
• Row 9: K1, [k1, p1] 6 times, k2tog, yo, k4, ssk, k7, yo, k3, yo, k7, k2tog, k4, yo, ssk, [p1, k1] 6 times, k1.
• Row 10: P1, [k1, p1] 7 times, p3, p2tog, p6, yo, p7, yo, p6, ssp, p3, [p1, k1] 7 times, p1.
• Row 11: K1, [k1, p1] 6 times, k4, ssk, k8, yo, k5, yo, k8, k2tog, k4, [p1, k1] 6 times, k1.
• Row 12: P1, [k1, p1] 7 times, p1, p2tog, p7, yo, p9, yo, p7, ssp, p1, [p1, k1] 7 times, p1.
• Row 13: K1, [k1, p1] 6 times, k2tog, yo, ssk, k9, yo, k7, yo, k9, k2tog, yo, ssk, [p1, k1] 6 times, k1.
• Row 15: K1, [k1, p1] 6 times, k33, [p1, k1] 6 times, k1.
• Row 17: Ssk, p1, [k1, p1] 5 times, k2tog, yo, k29, yo, ssk, [p1, k1] 5 times, p1, k2tog (57 sts).
• Row 18: P1, p1, [k1, p1] 6 times, p7, p2tog, p4, yo, p3, yo, p4, ssp, p7, [p1, k1] 6 times, p1, p1.
• Row 19: Ssk, [k1, p1] 5 times, k8, ssk, k6, yo, k1, yo, k6, k2tog, k8, [p1, k1] 5 times, k2tog (55 sts).
• Row 20: P1, [k1, p1] 6 times, p5, p2tog, p5, yo, p5, yo, p5, ssp, p5, [p1, k1] 6 times, p1.
• Row 21: Ssk, p1, [k1, p1] 4 times, k2tog, yo, k4, ssk, k7, yo, k3, yo, k7, k2tog, k4, yo, ssk, [p1, k1] 4 times, p1, k2tog (53 sts).
• Row 22: P1, p1, [k1, p1] 5 times, p3, p2tog, p6, yo, p7, yo, p6, ssp, p3, [p1, k1] 5 times, p1, p1.
• Row 23: Ssk, [k1, p1] 4 times, k4, ssk, k8, yo, k5, yo, k8, k2tog, k4, [p1, k1] 4 times, k2tog (51 sts).
• Row 24: P1, [k1, p1] 5 times, p1, p2tog, p7, yo, p9, yo, p7, ssp, p1, [p1, k1] 5 times, p1.
• Row 25: Ssk, p1, [k1, p1] 3 times, k2tog, yo, ssk, k9, yo, k7, yo, k9, k2tog, yo, ssk, [p1, k1] 3 times, p1, k2tog (49 sts).
• Row 26: P2tog, [k1, p1] 4 times, p29, [p1, k1] 4 times, ssp (47 sts).
• Row 27: Ssk, p1, [k1, p1] twice, k33, [p1, k1] twice, p1, k2tog (45 sts).
• Row 28: P2tog, [k1, p1] 3 times, p29, [p1, k1] 3 times, ssp (43 sts).
• Row 29: Ssk, p1, k1, p1, k2tog, yo, k29, yo, ssk, p1, k1, p1, k2tog (41 sts).
• Row 30: P2tog, [k1, p1] twice, p7, p2tog, p4, yo, p3, yo, p4, ssp, p7, [p1, k1] twice, ssp (39 sts).
• Row 31: Ssk, p1, k8, ssk, k6, yo, k1, yo, k6, k2tog, k8, p1, k2tog (37 sts).
• Row 32: P2tog, k1, p6, p2tog, p5, yo, p5, yo, p5, ssp, p6, k1, ssp (35 sts).
• Row 33: Ssk, k5, ssk, k7, yo, k3, yo, k7, k2tog, k5, k2tog (33 sts).
• Row 34: P2tog, p3, p2tog, p6, yo, p7, yo, p6, ssp, p3, ssp (31 sts).
• Row 35: Ssk, k1, ssk, k8, yo, k5, yo, k8, k2tog, k1, k2tog (29 sts).
• Row 36: P2tog, p25, ssp (27 sts).
• Row 37: Ssk, k23, k2tog (25 sts).
• Row 38: P2tog, p21, ssp (23 sts).
• Repeat rows 4-15.