Shown with a cast-on count of 2 stitches.  

• Row 1 (RS): Yo, p2, yo (4 sts).
• Row 2: P1, k2, p1.
• Row 3: Yo, k1, p2, k1, yo (6 sts).
• Row 4: P2, k2, p2.
• Row 5: Yo, k2, p2, k2, yo (8 sts).
• Row 6: P3, k2, p3.
• Row 7: Yo, k3, p2, k3, yo (10 sts).
• Row 8: P4, k2, p4.
• Row 9: Yo, k2, k2tog, yo, p2, yo, ssk, k2, yo (12 sts).
• Row 10: P4, k4, p4.
• Row 11: Yo, k2, k2tog, yo, p4, yo, ssk, k2, yo (14 sts).
• Row 12: K1, p3, k6, p3, k1.
• Row 13: Yo, p1, k1, k2tog, yo, p6, yo, ssk, k1, p1, yo (16 sts).
• Row 14: K2, p2, k8, p2, k2.
• Row 15: Yo, p2, k2tog, yo, p8, yo, ssk, p2, yo (18 sts).
• Row 16: P1, k2, p2, k8, p2, k2, p1.
• Row 17: Yo, k1, p2, k1, yo, ssk, p6, k2tog, yo, k1, p2, k1, yo (20 sts).
• Row 18: P2, k2, p3, k6, p3, k2, p2.
• Row 19: Yo, k2, p2, k2, yo, ssk, p4, k2tog, yo, k2, p2, k2, yo (22 sts).
• Row 20: P3, k2, p4, k4, p4, k2, p3.
• Row 21: Yo, k3, p2, k3, yo, ssk, p2, k2tog, yo, k3, p2, k3, yo (24 sts).
• Row 22: P4, k2, p5, k2, p5, k2, p4.
• Row 23: Yo, k2, k2tog, yo, p2, yo, ssk, k3, p2, k3, k2tog, yo, p2, yo, ssk, k2, yo (26 sts).
• Row 24: P4, k4, p4, k2, p4, k4, p4.
• Row 25: Yo, k2, k2tog, yo, p4, yo, ssk, k2, p2, k2, k2tog, yo, p4, yo, ssk, k2, yo (28 sts).
• Row 26: K1, p3, k6, p3, k2, p3, k6, p3, k1.
• Row 27: Yo, p1, k1, k2tog, yo, p6, yo, ssk, k1, p2, k1, k2tog, yo, p6, yo, ssk, k1, p1, yo (30 sts).
• Row 28: K2, p2, k8, p2, k2, p2, k8, p2, k2.
• Row 29: Yo, p2, k2tog, yo, p8, yo, ssk, p2, k2tog, yo, p8, yo, ssk, p2, yo (32 sts).
• Row 30: P1, k2, p2, k8, p2, k2, p2, k8, p2, k2, p1.
• Row 31: Yo, k1, p2, k1, yo, ssk, p6, k2tog, yo, k1, p2, k1, yo, ssk, p6, k2tog, yo, k1, p2, k1, yo (34 sts).
• Row 32: P2, k2, p3, k6, p3, k2, p3, k6, p3, k2, p2.
• Row 33: Yo, k2, p2, k2, yo, ssk, p4, k2tog, yo, k2, p2, k2, yo, ssk, p4, k2tog, yo, k2, p2, k2, yo (36 sts).
• Row 34: P3, k2, p4, k4, p4, k2, p4, k4, p4, k2, p3.
• Row 35: Yo, k3, p2, k3, yo, ssk, p2, k2tog, yo, k3, p2, k3, yo, ssk, p2, k2tog, yo, k3, p2, k3, yo (38 sts).
• Row 36: P4, k2, p5, k2, p5, k2, p5, k2, p5, k2, p4.