Create a super (or special) gap.
a) For 3.
On a 1-4 swing pass, 1 through cuts to the corner, 4 runs a kickback with 3 then steps to the sideline, 3 has a super-gap to attack.
Variation - 4 runs a dribble hand-off with 3.
Mads OIesen - 4 can run a kickback if X4 forces sideline (taking away middle penetration).
See Fast breaks - Early dribble-drive ballscreens (Pistol).
b) For 2
4 corner cuts, 1 runs a kickback with 2, 5 relocates on a middle drive.