Shown with a cast-on count of 9 stitches.  

• Row 1 (WS): K3, p3, k3.
• Row 2: K3, M1L, k1, M1R, k1, M1L, k1, M1R, k3 (13 sts).
• Rows 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, and 29: K3, purl to last 3 sts, k3.
• Row 4: K3, M1L, k3, M1R, k1, M1L, k3, M1R, k3 (17 sts).
• Row 6: K3, M1L, k5, M1R, k1, M1L, k5, M1R, k3 (21 sts).
• Row 8: K3, M1L, k7, M1R, k1, M1L, k7, M1R, k3 (25 sts).
• Row 10: K3, M1L, k9, M1R, k1, M1L, k9, M1R, k3 (29 sts).
• Row 12: K3, M1L, k11, M1R, k1, M1L, k11, M1R, k3 (33 sts).
• Row 14: K3, M1L, k13, M1R, k1, M1L, k13, M1R, k3 (37 sts).
• Row 16: K3, M1L, k1, yo, ssk, k10, yo, ssk, M1R, k1, M1L, k2tog, yo, k10, k2tog, yo, k1, M1R, k3 (41 sts).
• Row 18: K3, M1L, k2tog, yo, k1 tbl, yo, ssk, k7, k2tog, yo, k1 tbl, yo, ssk, M1R, k1, M1L, k2tog, yo, k1 tbl, yo, ssk, k7, k2tog, yo, k1 tbl, yo, ssk, M1R, k3 (45 sts).
• Row 20: K3, M1L, k2tog, yo, k3 tbl, yo, ssk, k5, k2tog, yo, k3 tbl, yo, ssk, M1R, k1, M1L, k2tog, yo, k3 tbl, yo, ssk, k5, k2tog, yo, k3 tbl, yo, ssk, M1R, k3 (49 sts).
• Row 22: K3, M1L, k2tog, yo, k5 tbl, yo, ssk, k3, k2tog, yo, k5 tbl, yo, ssk, M1R, k1, M1L, k2tog, yo, k5 tbl, yo, ssk, k3, k2tog, yo, k5 tbl, yo, ssk, M1R, k3 (53 sts).
• Row 24: K3, M1L, k2tog, yo, k7 tbl, yo, ssk, k1, k2tog, yo, k7 tbl, yo, ssk, M1R, k1, M1L, k2tog, yo, k7 tbl, yo, ssk, k1, k2tog, yo, k7 tbl, yo, ssk, M1R, k3 (57 sts).
• Row 26: K3, M1L, k2tog, yo, k9 tbl, yo, sl1-k2tog-psso, yo, k9 tbl, yo, ssk, M1R, k1, M1L, k2tog, yo, k9 tbl, yo, sl1-k2tog-psso, yo, k9 tbl, yo, ssk, M1R, k3 (61 sts).
• Row 28: K3, M1L, k1 tbl, [yo, ssk, k10 tbl] twice, yo, ssk, M1R, k1, M1L, [k2tog, yo, k10 tbl] twice, k2tog, yo, k1 tbl, M1R, k3 (65 sts).