Other routes for DD if finds good patronage are
Jaipur Agra Kanpur
Agra Kanpur Lucknow
Dehradun Meerut Aligarh Agra
Jaipur-Jodhpur
SC-SBC...
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MADGAON-PUNE
PUNE-AURANGABAD-NANDED
ASR-CDG
VARANASI-ALAHABAD-LUCKNOW-KANPUR
CHENNAI-Tirupati
Cochin-Trivandrum
HAWRAH-New Jalpaiguri
ADI-BRC-SURAT