sentence: They died when John was too little to remember and he never knew what happened , so he went everywhere to look for them . He even walked and walked even at reverse , but he never found them .
modified: They die when John was too little to remember and he never know what happened so he went to all the parts for saw them even he walked and walked even at reverse but he never found them .
transformation: VERB:TENSE, VERB:TENSE, PUNCT, OTHER, PART, OTHER, PUNCT, WO, K, PUNCT