Since the above link doesn't seems to provide accurate information or i may be wrong, i thought i would try to help here with some free time i have on hand right now.

Here is what i found.

BLR COK
4000 Miles plus Rs 1004 (including everything) in economy
8000 Miles plus Rs 1104 (including everything) in premier
Premier seats available only in 9W2307.

BLR BOM
6800 Miles plus Rs 1004 (including everything) in economy
13600 Miles plus Rs 1104 (including everything) in premier

BLR TRV
4800 Miles plus Rs 1004 (including everything) in economy
9600 Miles plus Rs 1104 (including everything) in premier

The reason i checked taxes for each sector was i remember paying more than 1200 on BOM DEL redemption few weeks back so just wasn't sure if it will be same on each flight but i guess the difference won't be much (if any).