sentence: If you want to start swimming , I think you should look for a swimming teacher because if ca n't swim , you need one , and if you can swim but not well , if you are not in practice and know your swimming style is not the best , I recommend professional assistance .
modified: If you want to start swimming I think you should looking for a swimming teacher because if ca n't swim , you must need it , and if you can swim but not well , if you are not on practice and know your swim style is not the best I recommend you a professional assistance .
transformation: PUNCT, VERB:FORM, VERB:TENSE, OTHER, PREP, NOUN:NUM, PUNCT, OTHER