sentence: When I was little , I tried a lot of sports ; handball , swimming , tennis , but my favourite sport is not one of those , it is a sport that I could never imagine : football .
modified: When I was little I had tried a lot of sports , Handball , Swimming , Tennis , but my favourite sport is not one of those , it is a sport that I have never imagine : Football .
transformation: PUNCT, VERB:TENSE, PUNCT, ORTH, ORTH, ORTH, VERB:TENSE, ORTH