Rather than waste a lot of bandwidth Stable, I will try and keep it simple. You will get, when available and when it suits the company, the min of 30 days leave per year. If you are lucky you may get more. You may get leave when you ask for it, but sometimes you will get the leave that the company thinks would be better for you. They call this forced leave. It normally comes in blocks of 4 days, which on a ordinary month would be called days off.
Luckily, regardless of how many days off..oops I mean leave , you get per month, you will still be able to fly the required 92hrs.
There are no answers to your leave permutation questions. Because it just depends. We do not know what it depends upon though.
It would seem that this runway thing is being blamed for the Leave "problems" this year. I now feel very embarrassed as I knew about the runway closure last year. I apologise to you all for not letting those in charge of leave planning know about it.
The Don