Shown with a cast-on count of 6 stitches.  

• Row 1 (RS): [Yo, yo, k1] 6 times (18 sts).
• Row 2: [Yo, p3] 6 times, yo (25 sts).
• Row 3: [K1, yo, k3tog, yo] 6 times, k1.
• Row 4: P2tog, yo, p1, yo, [p3, yo, p1, yo] 5 times, p2tog (35 sts).
• Row 5: K1, [yo, k3tog, yo, k3] 5 times, yo, k3tog, yo, k1.
• Row 6: P1, yo, [p1, yo, p1, yo, p1, yo, p3tog, yo] 5 times, p1, yo, p1, yo, p1, yo, p1 (49 sts).
• Row 7: K1, yo, [k3, yo, k1, yo] 11 times, k3, yo, k1 (73 sts).
• Row 8: P2tog, yo, [p3, yo, p3tog, yo] 11 times, p3, yo, p2tog.
• Row 9: K1, yo, k1, [yo, k3tog, [yo, k1] 3 times] 11 times, yo, k3tog, [yo, k1] twice (97 sts).
• Row 10: P1, yo, [p3, yo, p1, yo] 23 times, p3, yo, p1 (145 sts).
• Row 11: K2tog, yo, [k3, yo, k3tog, yo] 23 times, k3, yo, k2tog.
• Row 12: P1, yo, p1, [yo, p3tog, [yo, p1] 3 times] 23 times, yo, p3tog, [yo, p1] twice (193 sts).