sentence: It is convenient to travel by private car everyone can afford it , so that everyone has a private car nowadays . Some people suggest private cars are going to replace public transport .
modified: It is conveninet to travel by private cars .The price of private cars which every one can afford it , so that everyone has the private car nowadays .Some people point out private cars are going to replace the public transport .
transformation: SPELL, NOUN:NUM, OTHER, K, ORTH, DET, ORTH, VERB, DET