sentence: I have to start saying that I never imagined swimming as my favorite sport , because until my back injury , I did other sports . I mostly like extreme sports like downhill skiing , skateboarding , martial arts like Aikido , jiujitsu or ninjutsu , but because of my injury I had to start swimming and now I love it .
modified: I have to start saying that I never imagine swimming like my favorite sport , because until my back 's injury , I practiced other sports , I most like extreme sports like downhill , skateboarding martial arts like Aikido , jiujitsu or ninjutsu , but for my injury I have to start swimming and now I love it .
transformation: VERB:TENSE, PREP, NOUN:POSS, VERB, PUNCT, MORPH, NOUN, PUNCT, PREP, VERB:TENSE