Actually,53137/38 was previously of SDAH base (during having RSA only with SDAH-RPH & SDAH-MFP Pgr.),but after SDAH-RPH PGR. converted to MEMU and also 2 pair of BWN-RPH PGR. converted MEMU,this type of RSA pattern was provided.(as PRK-BHW-SBG unelectrified)
**Moreover,a wrong update here was RPH-DMKA Pgr.,it has its RSA with AZ-RPH group of passengers,not with these BWN-BHW-SBG group.I shall update it shortly