Militant said he used the 3-4, so I looked into it (Multi D playbook).
3-4: Under - Weak Blitz 3 (play)
Setup:
1. Pinch line
2. Re-blitz left MLB and place between left DE and DT.
3. Re-blitz LOLB and place behind left DE.
4. (optional) Put FS in flat zone.
Its easier to see if you click High Quality