question: How many of the officers killed at at Ashitla were not found mutilated the next day?
#1 return officers 
#2 return #1 that were killed at Ashitla 
#3 return #2 that were found mutilated the  next day 
#4 return number of  #2 
#5 return number of  #3 
#6 return the  difference of #4 and  #5