Step 1

Set-up force is flick

Step 2

1 and 2 clear to the middle (with conviction, otherwise there will be a poach) and 5 goes deep

Step 3

5 comes for the easy under

Step 4

2 continues

Step 5

if there is a poach by D2 or D1

Step 6

2 or 1 busts deep

Step 7