Shown with a cast-on count of 5 stitches.  

• Row 1 (RS): K2, yo, k1, yo, k2 (7 sts).
• Row 2: K2, p3, k2.
• Row 3: K2, yo, k1, yo, k1, yo, k1, yo, k2 (11 sts).
• Row 4: K2, p7, k2.
• Row 5: K2, yo, k3, yo, k1, yo, k3, yo, k2 (15 sts).
• Row 6: K2, p11, k2.
• Row 7: K2, yo, k5, yo, k1, yo, k5, yo, k2 (19 sts).
• Row 8: K2, p15, k2.
• Row 9: K2, yo, k7, yo, k1, yo, k7, yo, k2 (23 sts).
• Row 10: K2, p19, k2.
• Row 11: K2, yo, k9, yo, k1, yo, k9, yo, k2 (27 sts).
• Row 12: K2, p23, k2.
• Row 13: K2, yo, k11, yo, k1, yo, k11, yo, k2 (31 sts).
• Row 14: K2, p27, k2.
• Row 15: K2, yo, k13, yo, k1, yo, k13, yo, k2 (35 sts).
• Row 16: K2, p31, k2.
• Row 17: K2, yo, k15, yo, k1, yo, k15, yo, k2 (39 sts).
• Row 18: K2, p35, k2.
• Row 19: K2, yo, k17, yo, k1, yo, k17, yo, k2 (43 sts).
• Row 20: K2, p39, k2.
• Row 21: K2, yo, k19, yo, k1, yo, k19, yo, k2 (47 sts).
• Row 22: K2, p43, k2.
• Row 23: K2, yo, k21, yo, k1, yo, k21, yo, k2 (51 sts).
• Row 24: K2, p47, k2.
• Row 25: K2, yo, p23, yo, k1, yo, p23, yo, k2 (55 sts).
• Row 26: K2, k51, k2.
• Row 27: K2, yo, k25, yo, k1, yo, k25, yo, k2 (59 sts).
• Row 28: K2, p55, k2.
• Row 29: K2, yo, p27, yo, k1, yo, p27, yo, k2 (63 sts).
• Row 30: K2, p59, k2.
• Row 31: K2, yo, [k2tog, yo] 14 times, k1, yo, k1, yo, k1, [yo, ssk] 14 times, yo, k2 (67 sts).
• Row 32: K2, p63, k2.
• Row 33: K2, yo, [k2tog, yo] 15 times, k1, yo, k1, yo, k1, [k2tog, yo] 15 times, yo, k2 (71 sts).
• Row 34: K2, p67, k2.
• Row 35: K2, yo, [k2tog, yo] 16 times, k1, yo, k1, yo, k1, [k2tog, yo] 16 times, yo, k2 (75 sts).
• Row 36: K2, p71, k2.
• Row 37: K2, yo, [k2tog, yo] 17 times, k1, yo, k1, yo, k1, [k2tog, yo] 17 times, yo, k2 (79 sts).