FOs pay:
Basic 17000
Housing 12600
Transport 2000
The above is all fixed so 31600 per month will be your minimum pay and you can spend it as you wish (i.e you can spend less or more on your housing but FZ will still give you 12600 per month).
Flight pay is variable (114 per block hour for FO's) and it can vary quite a lot. An 80hr month would add 9000 to your monthly pay. If you have 2 weeks leave and only do 40hrs, flight pay would be 4500.
One thing that does catch new joiners out is you receive NO flight pay during the type rating & duty pay doesn't exist at FZ, so 31600 is all you receive for the TR months.