Shown with a cast-on count of 4 stitches.  

• Rounds 1-2: Knit.
• Round 4: K2, ctr dbl inc, k1 (6 sts).
• Round 6: K3, ctr dbl inc, k2 (8 sts).
• Round 8: K4, ctr dbl inc, k3 (10 sts).
• Round 10: K5, ctr dbl inc, k4 (12 sts).
• Round 12: K6, ctr dbl inc, k5 (14 sts).
• Round 14: K7, ctr dbl inc, k6 (16 sts).
• Round 16: K1, yo, ssk, k11, k2tog, yo.
• Round 18: K2, yo, ssk, k9, k2tog, yo, k1.
• Round 20: K3, yo, ssk, k7, k2tog, yo, k2.
• Round 22: K4, yo, ssk, k5, k2tog, yo, k3.
• Round 24: K5, yo, ssk, k3, k2tog, yo, k4.
• Round 26: K6, yo, ssk, k1, k2tog, yo, k5.
• Round 28: K7, yo, sl2-k1-p2sso, yo, k6.