      (E0w,),
      (E0c,),
      (E0p,),
  
      (E0w, N0w),
      (E0c, N0w),
      (E0p, N0w),
  
      (E0p, P1p, N0p),
      (E0c, P1c, N0c),
  
      (E0w, P1c),
 
</s> remove     (E0w,),
 </s> add     (E0W,), </s> remove     (E1w,),
 </s> add     (E1W,), </s> remove     (E0w, E1w),
    (E0w, E1p,),
    (E0p, E1w,),
    (E0p, E1w),
 </s> add     (E0W, E1W),
    (E0W, E1p,),
    (E0p, E1W,),
    (E0p, E1W), </s> remove cdef class Span:
    cdef Tokens _seq
    cdef public int start
    cdef public int end


 </s> add  </s> remove     (P1w, N0w,),
    (N0w, N1w),
 </s> add     (P1W, N0W,),
    (N0W, N1W),
    (E0W, N0W),
    (E0c, N0W),
    (E0p, N0W),
      (E0w,),
      (E0c,),
      (E0p,),
  
    (E0W, N0W),
    (E0c, N0W),
    (E0p, N0W),
    (E0W, N0W),
    (E0c, N0W),
    (E0p, N0W),
    (E0W, N0W),
    (E0c, N0W),
    (E0p, N0W),
  
      (E0p, P1p, N0p),
      (E0c, P1c, N0c),
  
      (E0w, P1c),
keep keep keep keep replace replace replace keep keep keep keep keep
 * Move Span class to own file 
spacy/syntax/_parse_features.pyx