..................................., there are 3 drain lines.[/QUOTE]
If you pour water down the three centre groups of drainage holes you will find that the water exits two hoses beside one another, one normal looking hose and one with the end pinched together for some reason. With one drain at each end that makes four drains.
The two centre drains exit above the front end of the transmission and can easily be seen.

Leafs at top of photo nearly covering passenger side drain. Just 1" above this drain is the heater/AC air inlet.


Leaves covering drain