Parallel Waves end in Mini-Wave Columns.

If Centers start in Back-to-Back Couples, they Peel Off (to end on the same spot), adjust to a right-hand wave then Ah So.

If Centers start in Facing Couples, they step to a right-hand wave and do an Ends Trade, Centers Trade then Ah So.

Bits & Pieces is a 2-part call:

1. Ends two "O" Circulates as Centers Peel & Trail;
2. Ends Trade as Centers Ah So.