Original sentence: Served by Indian Railways, Allahabad is the headquarters of the North Central Railway Zone, and is well connected by trains with all major cities, namely, Kolkata , Delhi, Mumbai (Bombay), Chennai (Madras), Hyderabad, Lucknow, Patna, Bangalore and Jaipur
Edited sentence: Served by Indian Railways, Allahabad is the headquarters of the North Central Railway Zone, and is well connected by trains with all major cities, namely, Kolkata , Delhi, Mumbai , Chennai, Hyderabad, Lucknow, Patna, Bangalore and Jaipur