Most of the bases have 5 ON, 4 OFF pattern. In that case, you would just drop one ON block. You would end up with a 5 ON, 13 OFF.
This pattern is available from 1st of Nov till end of March. Some months, you would have only 5 working days, some others, 10.
Of these blocks of 5 working days you would have one SBY. Depending on the base, the sectors can be quite short. You may fly less than 20 hours a month, and be payed accordingly. Some months you could be flying 60 hours.
You would have to find a mate willing to share with you. One of you would stay on early shift, the other would always be on late.