Shown with a cast-on count of 12 stitches.  

• Round 1: K12.
• Round 2: *K1, yo, repeat from * (24 sts).
• Rounds 3, 5, 9, 13, and 16: Knit.
• Round 4: *K1, yo, repeat from * (48 sts).
• Rounds 6, 10, and 14: Purl.
• Round 7: *K2tog, [yo, k1] twice, [k2tog] twice, [yo, k1] twice, k2tog, repeat from *.
• Round 8: *K1, yo, repeat from * (96 sts).
• Round 11: *[K2tog] twice, [yo, k1] 4 times, [k2tog] 4 times, [yo, k1] 4 times, [k2tog] twice, repeat from *.
• Round 12: *K1, yo, repeat from * (192 sts).
• Round 15: *[K2tog] twice, [yo, k1] 4 times, [k2tog] 4 times, [yo, k1] 4 times, [k2tog] 4 times, [yo, k1] 4 times, [k2tog] 4 times, [yo, k1] 4 times, [k2tog] twice, repeat from *.