Shown with a cast-on count of 13 stitches.  

• Row 1 (RS): K13.
• Row 2: Yo, k1, yo, knit (15 sts).
• Row 3: Yo, k1, yo, knit (17 sts).
• Row 4: Yo, k1, yo, knit (19 sts).
• Row 5: Yo, k1, yo, knit (21 sts).
• Row 6: Yo, k1, yo, knit (23 sts).
• Row 7: Yo, k1, yo, knit (25 sts).
• Row 8: Yo, k1, yo, knit (27 sts).
• Row 9: Yo, k1, yo, knit (29 sts).
• Row 10: Yo, k1, yo, knit (31 sts).
• Row 11: Yo, k1, [yo, k2tog, yo, k1] 9 times, k3 (41 sts).
• Row 12: Yo, k1, yo, knit (43 sts).
• Row 13: Yo, k1, yo, knit (45 sts).
• Row 14: Yo, k1, yo, knit (47 sts).
• Row 15: Yo, k1, yo, knit (49 sts).
• Row 16: Yo, k1, yo, knit (51 sts).
• Row 17: Yo, k1, yo, knit (53 sts).
• Row 18: Yo, k1, yo, knit (55 sts).
• Row 19: Yo, k1, yo, knit (57 sts).
• Row 20: Yo, k1, yo, knit (59 sts).
• Row 21: Yo, k1, [yo, k2tog, yo, k1] 18 times, k4 (78 sts).
• Row 22: Yo, k1, yo, knit (80 sts).
• Row 23: Yo, k1, yo, knit (82 sts).
• Row 24: Yo, k1, yo, knit (84 sts).
• Row 25: Yo, k1, yo, knit (86 sts).
• Row 26: Yo, k1, yo, knit (88 sts).
• Row 27: Yo, k1, yo, knit (90 sts).
• Row 28: Yo, k1, yo, knit (92 sts).
• Row 29: Yo, k1, yo, knit (94 sts).
• Row 30: Yo, k1, yo, knit (96 sts).
• Row 31: Yo, k1, [yo, k2tog, yo, k1] 31 times, k2 (128 sts).
• Row 32: Yo, k1, yo, knit (130 sts).
• Row 33: Yo, k1, yo, knit (132 sts).
• Row 34: Yo, k1, yo, knit (134 sts).
• Row 35: Yo, k1, yo, knit (136 sts).
• Row 36: Yo, k1, yo, knit (138 sts).
• Row 37: Yo, k1, yo, knit (140 sts).
• Row 38: Yo, k1, yo, knit (142 sts).
• Row 39: Yo, k1, yo, knit (144 sts).
• Row 40: Yo, k1, yo, knit (146 sts).
• Row 41: Yo, k1, [yo, k2tog, yo, k1] 47 times, k4 (194 sts).