Shown with a cast-on count of 24 stitches.  

• Row 1 (RS): Kfb, purl to last st, kfb (26 sts).
• Row 2: Kfb, yo, k1, yo, k5, yo, k1, yo, k10, yo, k1, yo, k5, yo, k1, yo, kfb (36 sts).
• Row 3: Kfb, purl to last st, kfb (38 sts).
• Row 4: Kfb, k2, yo, k3, yo, k5, yo, k3, yo, k10, yo, k3, yo, k5, yo, k3, yo, k2, kfb (48 sts).
• Row 5: Kfb, purl to last st, kfb (50 sts).
• Row 6: Kfb, k4, yo, k5, yo, k5, yo, k5, yo, k10, yo, k5, yo, k5, yo, k5, yo, k4, kfb (60 sts).
• Row 7: Kfb, purl to last st, kfb (62 sts).
• Row 8: Kfb, k6, yo, k7, yo, k5, yo, k7, yo, k10, yo, k7, yo, k5, yo, k7, yo, k6, kfb (72 sts).
• Row 9: Kfb, purl to last st, kfb (74 sts).
• Row 10: Kfb, k12, yo, k1, yo, k13, yo, k1, yo, k18, yo, k1, yo, k13, yo, k1, yo, k12, kfb (84 sts).
• Row 11: Kfb, purl to last st, kfb (86 sts).
• Row 12: Kfb, k14, yo, k3, yo, k13, yo, k3, yo, k18, yo, k3, yo, k13, yo, k3, yo, k14, kfb (96 sts).
• Row 13: Kfb, purl to last st, kfb (98 sts).
• Row 14: Kfb, k16, yo, k5, yo, k13, yo, k5, yo, k18, yo, k5, yo, k13, yo, k5, yo, k16, kfb (108 sts).
• Row 15: Kfb, purl to last st, kfb (110 sts).
• Row 16: CO 18 sts, k19, yo, k7, yo, k13, yo, k7, yo, k18, yo, k7, yo, k13, yo, k7, yo, k19 (136 sts).
• Round 17: Knit.