Shown with a cast-on count of 9 stitches.  

• Round 1: [Yo, k1] 9 times (18 sts).
• Rounds 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, and 28: Knit.
• Round 3: [K1, (k1, p1, k1) in next st, k1] 6 times (30 sts).
• Round 5: [Ssk, yo, (k1, p1, k1) in next st, yo, k2tog] 6 times (42 sts).
• Round 7: [Ssk, yo, k1, (k1, p1, k1) in next st, k1, yo, k2tog] 6 times (54 sts).
• Round 9: [[Ssk, yo] twice, (k1, p1, k1) in next st, [yo, k2tog] twice] 6 times (66 sts).
• Round 11: [[Ssk, yo] twice, k1, (k1, p1, k1) in next st, k1, [yo, k2tog] twice] 6 times (78 sts).
• Round 13: [[Ssk, yo] 3 times, (k1, p1, k1) in next st, [yo, k2tog] 3 times] 6 times (90 sts).
• Round 15: [[Ssk, yo] 3 times, k1, (k1, p1, k1) in next st, k1, [yo, k2tog] 3 times] 6 times (102 sts).
• Round 17: [[Ssk, yo] 4 times, (k1, p1, k1) in next st, [yo, k2tog] 4 times] 6 times (114 sts).
• Round 19: [[Ssk, yo] 4 times, k1, (k1, p1, k1) in next st, k1, [yo, k2tog] 4 times] 6 times (126 sts).
• Round 21: [[Ssk, yo] 5 times, (k1, p1, k1) in next st, [yo, k2tog] 5 times] 6 times (138 sts).
• Round 23: [[Ssk, yo] 5 times, k1, (k1, p1, k1) in next st, k1, [yo, k2tog] 5 times] 6 times (150 sts).
• Round 25: [[Ssk, yo] 6 times, (k1, p1, k1) in next st, [yo, k2tog] 6 times] 6 times (162 sts).
• Round 27: Purl.