Fill in the answer.  
5 - 6 - 8 =  a0 
- 3 + 8 - 7 =  a1 
14 - 5 + 3 - 11 =  a2 
- 9 - 6 + 7 - 2 =  a3 
6 - 8 + 2 - 4 + 5 =  a4 
- 2 - 3 + 9 - 1 + 3 =  a5
Please ignore the lil things after the equal sign! They're just there for examples, not in the actual equation!