Table 2. An artificial example of erroneous sentences, words in bold refer to incorrect words.

Input	Output
Original input	They have read many books and papers and have published many papers in international and highly reputable journals by collaborating with many researchers around the world.
Synthetic errors	They have road many books, peeper end have published money papers on the international and height reputable journals by a collaborating with money researchers around the word.
Spelling errors	They hav road many boks, peeper end published money papers on teh international and height reputabele journals by collabroating with money researchers around the word.