  
  "can't": [{"F": "ca", "L": "can", "pos": "MD"},
            {"F": "n't", "L": "not", "pos": "RB"}],
  "cant": [{"F": "ca", "L": "can", "pos": "MD"},
            {"F": "n't", "L": "not", "pos": "RB"}],
  "Can't": [{"F": "Ca", "L": "can", "pos": "MD"},
            {"F": "n't", "L": "not", "pos": "RB"}],
  
  "cannot":  [{"F": "can", "pos": "MD"},
              {"F": "not", "L": "not", "pos": "RB"}],
 
</s> remove            {"F": "n't", "L": "not"}],
 </s> add            {"F": "nt", "L": "not"}], </s> remove                 {"F": "n't", "L": "not", "pos": "RB"}],
 </s> add                 {"F": "nt", "L": "not", "pos": "RB"}], </s> remove                 {"F": "n't", "L": "not", "pos": "RB"},
                {"F": "'ve", "pos": "VB"}],
 </s> add                 {"F": "nt", "L": "not", "pos": "RB"},
                {"F": "ve", "pos": "VB"}], </s> remove                 {"F": "'ve", "L": "have", "pos": "VB"}],
 </s> add                 {"F": "ve", "L": "have", "pos": "VB"}], </s> remove             {"F": "n't", "L": "not", "pos": "RB"}],
 </s> add             {"F": "nt", "L": "not", "pos": "RB"}],
          {"F": "nt", "L": "not", "pos": "RB"}],
  
  "can't": [{"F": "ca", "L": "can", "pos": "MD"},
            {"F": "n't", "L": "not", "pos": "RB"}],
  "cant": [{"F": "ca", "L": "can", "pos": "MD"},
          {"F": "nt", "L": "not", "pos": "RB"}],
  "Can't": [{"F": "Ca", "L": "can", "pos": "MD"},
            {"F": "n't", "L": "not", "pos": "RB"}],
  
  "cannot":  [{"F": "can", "pos": "MD"},
              {"F": "not", "L": "not", "pos": "RB"}],
keep keep keep keep replace keep keep keep keep keep
 * Fix ... tokenization, and correct orth inconsistencies in specials.json 
lang_data/en/specials.json