Aidan Burns' Scrambled V Variation (iB cB sA)
The feeder is "A", the juggler to the feeder's left is "B" and the juggler to the feeder's right is "C". The feeder counts "1 2 3" to make it easier to keep track of where we are in the pattern. On beats 1 and 3, A (the feeder) and B exchange a pass. On beat 2, A and C exchange a pass.
After pass three, B walks on a 4-count to the left side of A. All the jugglers are relabeled
(A -> B', B -> C', C -> A')
and the new feeder A' starts counting the 3 passes, starting with B'.
1. "iB": The manipulator (M) intercepts a pass from A to B.
The juggler who was B is new M, and reads from the manipulator line. The juggler who was M now is B.
2. "cB": M carries a club to B.
3. "sA": M substitutes a the pass from B to A.
How to do this pattern:
We start manipulating the pattern by substituting the pass from B to A on beat three.
You can skip the tree bit if you like.