With B, ch 5; join with sl st in first ch to form a ring.
Rnd 1 (Right Side): Ch 1, work 8 sc in ring; do not join, work in continuous rnds (spiral) - 8 sc. Place marker in first st for beg of rnd; move marker up as each rnd is completed.
Note: Beginning on Rnd 2, work through back loops only.
Rnd 2: 2 sc in each st around - 16 sc at the end of this rnd.
Rnd 3: *Sc in next st, 2 sc in next st; rep from * around - 24 sc.
Rnd 4: *Sc in next 2 sts, 2 sc in next st; rep from * around changing to A in last st - 32 sc.
Rnd 5: *Sc in next 3 sts, 2 sc in next st; rep from * around - 40 sc.
Rnd 6: *Sc in next 4 sts, 2 sc in next st; rep from * around - 48 sc.
Rnd 7: Sc in each st around, changing to B in last st.
With B, rep Rnd 7 three times, changing to A in last st.
With A, rep Rnd 7 three times, changing to B in the last st.
Fasten off A.
Next Rnd: With B, sc in next 14 sts, dc in next 20 sts, sc in last 14 sts.
Next Rnd: Sl st in next 16 sts, dc in next 16 sts, sl st in last 16 sts. Fasten off.
Weave in ends.