Dear Ishwar,
Prefixing and suffixing holidays to any kind of leave is subject to the approval of the leave sanctioning authority concerned whether the employee belongs to the Central or State Government. As the very terms would indicate, only those holidays falling just before the first day and after the last day of the stretch of leave can be availed of as prefix and suffix respectively.
When the leave taken is a combination of different kinds of leave as you mentioned, it would be treated as a single stretch of leave only for the purpose of prefix and suffix and the intervening holidays, if any would merge with the total number of leave sanctioned in combination.