Can I have show two different approaches in single thesis, regarding the same topic? I am doing research on Security Patterns. In First 6 month i was working on Formalization of Security Patterns. I have extended a approach for formalization of Security Patterns. Subsequently, in the next 6 month i did research on Selection of Appropriate security patterns. 
Normally, The structure of thesis 


Introduction
Related Work
Proposed Work
Implementation
Result , Conclusion and Future. 


I am confused in this. 
I have different implementation and result respectively for Formalization and Selection techniques. 
My Thesis Content will look like


Introduction 
Related Work 
Formalization(Proposed Work,Implementation and Result).  
Selection(Proposed Work, Implementation and Result).
Conclusion.


Can i have two different result and implementation in a thesis. It is acceptable or not? 
Thesis is for Master Degree.
It is totally normal and reasonable to do more than one type of work on a problem, and to report it in a structure like the one that you have sketched.  Just make sure that your explanation follows a coherent narrative (e.g., how does your work on selection follow from your work on formalization) and it will be fine.