With 3 strands of A held together, mark 8 in[20.5 cm] from the ends. Lay strands together, with ends to the right. Tie B with a double knot around center of the 8 in [20.5 cm] length. With crochet hook and B, sl st around the center of the 8" [20.5 cm] length. *Fold an 8 in [20.5 cm] length of 3 strands of A across the strand of B. With B, sl st around the center of the 8 in [20.5 cm] length. Repeat from * until all of A is used. Tie B in a double knot around the last sl st. Fasten off.
Weave in ends of B.