sentence: At the beginning , it was really difficult for me because I was a little shy with customers and I was n't used to working among noisy machinery and shouting workers , but after a while , I learned to ignore all of that !
modified: At the beginning it was really difficult to me because I was a little shy with customers and I was n't used to working among noisy machinery and shouting workers , but after a while time I learned to ignore all of that !
transformation: PUNCT, PREP, NOUN, PUNCT