Shown with a cast-on count of 21 stitches.  

• Rounds 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, and 150: Knit.
• Round 101: K3, k2tog, yo, ssk, k1, k2tog, yo, k1, yo, ssk, k1, k2tog, yo, ssk, k3, yo (20 sts).
• Round 103: K5, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k5, yo, k1, yo (22 sts).
• Rounds 105, 109, 113, and 117: K3, k2tog, yo, k3, yo, sl1-k2tog-psso, yo, k3, yo, ssk, k3, yo, sl1-k2tog-psso, yo.
• Rounds 107, 111, and 115: K5, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k5, yo, sl1-k2tog-psso, yo.
• Round 119: Ssk, k3, yo, sl1-k2tog-psso, yo, k3, yo, sl1-k2tog-psso, yo, k3, k2tog, yo, k1, yo, k1 tbl, yo, k1, yo (24 sts).
• Round 121: Ssk, k3, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k3, k2tog, [yo, k1, yo, k1 tbl] 3 times, yo, k1, yo (30 sts).
• Round 123: Ssk, k3, yo, ssk, k1, k2tog, yo, k3, k2tog, [yo, k3, yo, k1 tbl] 3 times, yo, k3, yo (36 sts).
• Round 125: Ssk, k3, yo, sl1-k2tog-psso, yo, k3, k2tog, [yo, k5, yo, k1 tbl] 3 times, yo, k5, yo (42 sts).
• Round 127: Ssk, k7, k2tog, [yo, k7, yo, k1 tbl] 3 times, yo, k7, yo (48 sts).
• Round 129: Ssk, k5, k2tog, yo, ssk, k7, yo, k1 tbl, yo, k7, k2tog, yo, k1 tbl, yo, ssk, k7, yo, k1 tbl, yo, k7, k2tog, yo (50 sts).
• Round 131: Ssk, k3, k2tog, yo, ssk, k7, yo, sl1-k2tog-psso, yo, k7, k2tog, yo, k1 tbl, yo, ssk, k7, yo, sl1-k2tog-psso, yo, k7, k2tog, yo (48 sts).
• Round 133: Yo, k2tog, yo, k1, [yo, ssk] twice, k17, k2tog, yo, k1 tbl, yo, ssk, k17, k2tog.
• Round 135: Yo, k2tog, yo, k3, [yo, ssk] twice, k15, k2tog, yo, sl1-k2tog-psso, yo, ssk, k15, k2tog (46 sts).
• Round 137: Yo, [k2tog, yo] twice, k1, [yo, ssk] 3 times, k13, k2tog, yo, sl1-k2tog-psso, yo, ssk, k13, k2tog (44 sts).
• Round 139: Yo, [k2tog, yo] twice, k3, [yo, ssk] 3 times, k11, k2tog, yo, k3, yo, ssk, k11, k2tog.
• Round 141: Yo, [k2tog, yo] 3 times, k1, [yo, ssk] 4 times, k9, [k2tog, yo] twice, k1, [yo, ssk] twice, k9, k2tog.
• Round 143: Yo, [k2tog, yo] 3 times, k3, [yo, ssk] 4 times, k7, [k2tog, yo] twice, k3, [yo, ssk] twice, k7, k2tog.
• Round 145: Yo, [k2tog, yo] 4 times, k1, [yo, ssk] 5 times, k5, [k2tog, yo] 3 times, k1, [yo, ssk] 3 times, k5, k2tog.
• Round 147: Yo, [k2tog, yo] 4 times, k3, [yo, ssk] 5 times, k3, [k2tog, yo] 3 times, k3, [yo, ssk] 3 times, k3, k2tog.
• Round 149: Yo, [k2tog, yo] 5 times, k1, [yo, ssk] 6 times, k1, [k2tog, yo] 4 times, k1, [yo, ssk] 4 times, k1, k2tog.