Our typical setup: #1 is the ball carrier by our net. 2 and 3 are down the court and wide.
1 chooses a side to make the play. In this case, choosing 3's side.
3 moves in to stagger and create space for 2.
2 could now come in as well to get a pass around the boards behind the net.
OR
2 could go to one of the corners deep into space.
ALTERNATIVELY
1 could pass to 3
And look for a give-go
OR if the D takes away the give-go option
3 can look for 2 to step in
1 can then cut across
2 can now move into the space where 1 was, and 3 can fill in the point.
Back to a triangle! :)