This is a diagram of the bumper, looking at it from the top. Where I've circled in red are where it's broken, at the points where it's riveted to the frame, I'm assuming. The lone green check mark is on the lower support thing that sticks out. It's the only one that's intact.
Starting on the passenger side, this is the far left ear that's damaged. It's barely recognizable:
In this photo, you can see both the middle-left ear that's broken and the lower support "arm" that sticks out, which is also broken. You can also see where I tried to use duct tape to reattach the bumper at the scene of the accident, to no avail.
In this photo, you can see the middle-right ear, which is broken, and the lower support "arm", the only remaining piece that's intact:
(also, more duct tape)
In this photo, you can see the far-right (driver) side ear that's destroyed:
And for reference, this is a picture to show where exactly the car hit the bumper: