sentence: It is a great life stage , but at the same time , it is difficult . Sometimes teenagers have problems with their families , with themselves . As a result , they do n't know what to choose .
modified: It is a great life stage but at the same time is difficult , sometimes teenagers have problems with their families , with themselves , as a result they do n't know whah to choose .
transformation: PUNCT, OTHER, PUNCT, PUNCT, PUNCT, SPELL