'Pro Bono' - SMU Pro Bono Club

* Please click on the picture for a clearer view.

Produced in Dec 2011 for SMU Pro Bono Club, but was unfortunately turned down as it was unsuitable for the club's use. This infinite tessellation was created through reliance on the infamous ambigramming technique.

Here's the catch for you:
1) Every line of "pro bono" looks exactly the same.
2) Each line of "pro bono" re-synthesises itself 4 times - this also means that each recreated "pro bono" recreates another 4 "pro bono"s.
3) No one line of "pro bono" is short of any letter, and at the same time, the grid is designed to be capable of being fully saturated.
4) Because of the synthesis of 4 "pro bono"s by every "pro bono", the grid is infinite is endless.

(Of course, for the purpose of presentation, it has to be put at an end in the picture.)