Ignition coil on c cylinder is bad. Which one is c cylinder? Thanks on 2007 Toyota Corolla

Not sure which one is c cylinder

Asked by for the 2007 Toyota Corolla
That's the one the coil is bad on! If you dont know which coil it is,, how do you know one of them is bad? Any codes? Cylinders are identified as numbers 1-2-3-4...
Code was ignition coil on c cylinder. Of course that's probably number 3 but which one is that when looking at engine
3rd one back from the front of the engine which is on the passenger side, where the belt is! That is refered to as the number "3" cylinder!!! Was the code PO303?????? Code numbers are all the info we need!