Shown with a cast-on count of 40 stitches.  

• Row 1 (RS): [K1, p1] 3 times, k1, *p2, yo, ssk, k8, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Rows 2, 6, 10, 14, 18, 22, 26, 30, and 34: [K1, p1] 3 times, k3, *p10, k2, repeat from * to last 7 sts, [p1, k1] 3 times, p1.
• Row 3: [P1, k1] 3 times, p1, *p2, yo, k1, ssk, k7, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Rows 4, 8, 12, 16, 20, 24, 28, 32, and 36: [P1, k1] 3 times, p1, k2, *p10, k2, repeat from * to last 7 sts, [k1, p1] 3 times, k1.
• Row 5: [K1, p1] 3 times, k1, *p2, yo, k2, ssk, k6, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 7: [P1, k1] 3 times, p1, *p2, yo, k3, ssk, k5, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 9: [K1, p1] 3 times, k1, *p2, yo, k4, ssk, k4, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 11: [P1, k1] 3 times, p1, *p2, yo, k5, ssk, k3, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 13: [K1, p1] 3 times, k1, *p2, yo, k6, ssk, k2, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 15: [P1, k1] 3 times, p1, *p2, yo, k7, ssk, k1, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 17: [K1, p1] 3 times, k1, *p2, yo, k8, ssk, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 19: [P1, k1] 3 times, p1, *p2, k8, k2tog, yo, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 21: [K1, p1] 3 times, k1, *p2, k7, k2tog, k1, yo, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 23: [P1, k1] 3 times, p1, *p2, k6, k2tog, k2, yo, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 25: [K1, p1] 3 times, k1, *p2, k5, k2tog, k3, yo, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 27: [P1, k1] 3 times, p1, *p2, k4, k2tog, k4, yo, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 29: [K1, p1] 3 times, k1, *p2, k3, k2tog, k5, yo, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 31: [P1, k1] 3 times, p1, *p2, k2, k2tog, k6, yo, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.
• Row 33: [K1, p1] 3 times, k1, *p2, k1, k2tog, k7, yo, repeat from * to last 9 sts, p3, [k1, p1] 3 times.
• Row 35: [P1, k1] 3 times, p1, *p2, k2tog, k8, yo, repeat from * to last 9 sts, p2, [k1, p1] 3 times, k1.