c = 
 class = 1
c =   class = 1
c =  class = 4
c =   class = 1
c = -1 class = -1
c = 
 class = 1
c =   class = 1
c = 1 class = 3
c = 8 class = 3
c = 7 class = 3
c = 2 class = 3
c = -1 class = -1
c = -1 class = -1
