old_contents: REDUCED_RULE_VALENCY_TOKEN = 0
  REDUCED_RULE_POS = 1
  REDUCED_RULE_MORPHOLOGICAL_BREAKUP = 2
  REDUCED_RULE_GLOSSES = 3
  
new_contents: REDUCED_RULE_POS = 1
  REDUCED_RULE_MORPHOLOGICAL_BREAKUP = 2
  REDUCED_RULE_GLOSSES = 3
  REDUCED_RULE_VALENCY = 4
  
subject: Rename VALENCY constant and change index