Answer 1.6

1.6
=>fil chemin

=> s (michael addition or michael rea!tion)
           701 MICHAEL
         16266 ADDITION
           380 MICHAEL ADDITION
                 (MICHAEL(W)ADDITION)
           701 MICHAEL
         20945 REA!TION
            95 MICHAEL REA!TION
                 (MICHAEL(W)REA!TION)
L1         464 (MICHAEL ADDITION OR MICHAEL REA!TION)