Shown with a cast-on count of 1 stitch.  

• Row 1 (RS): Yo, k1, yo (3 sts).
• Rows 2, 4, 6, 8, and 10: Purl.
• Row 3: Yo, k3, yo (5 sts).
• Row 5: Yo, k5, yo (7 sts).
• Row 7: Yo, k7, yo (9 sts).
• Row 9: Yo, k9, yo (11 sts).
• Row 11: Yo, k1, yo, k2, ssk, p1, k2tog, k2, yo, k1, yo (13 sts).
• Row 12: P6, k1, p6.
• Row 13: Yo, k3, yo, k1, ssk, p1, k2tog, k1, yo, k3, yo (15 sts).
• Row 14: P7, k1, p7.
• Row 15: Yo, k5, yo, ssk, p1, k2tog, yo, k5, yo (17 sts).
• Row 16: P8, k1, p8.
• Row 17: Yo, k3, p1, *k2tog, k2, yo, k1, yo, k2, ssk, p1, repeat from * to last 3 sts, k3, yo (multiple of 10 sts, plus 9).
• Row 18: P4, *k1, p9, repeat from * to last 5 sts, k1, p4.
• Row 19: Yo, k4, p1, *k2tog, k2, yo, k1, yo, k2, ssk, p1, repeat from * to last 4 sts, k4, yo (multiple of 10 sts, plus 11).
• Row 20: P5, *k1, p9, repeat from * to last 6 sts, k1, p5.
• Row 21: Yo, k1, *yo, k2, ssk, p1, k2tog, k2, yo, k1, repeat from *, yo (multiple of 10 sts, plus 3).
• Row 22: P1, *p5, k1, p4, repeat from * to last 2 sts, p2.
• Row 23: Yo, k3, *yo, k1, ssk, p1, k2tog, k1, yo, k3, repeat from *, yo (multiple of 10 sts, plus 5).
• Row 24: P1, *p6, k1, p3, repeat from * to last 4 sts, p4.
• Row 25: Yo, k5, *yo, ssk, p1, k2tog, yo, k5, repeat from *, yo (multiple of 10 sts, plus 7).
• Row 26: P1, *p7, k1, p2, repeat from * to last 6 sts, p6.
• Repeat rows 17-26.