I would request everyone to stick to Nifty50 stocks only, as many other stocks outside this list are operator driven/manipulated. So the inherent edge of the system may not be realised.
I have learnt this the hard way.
In my experience even within nifty 50, stocks such as commodity stocks (cements/oil companies/coal/gas), Pharma stocks and many sarkari companies are simply detrimental to the ledger. Many of them have no sense to their madness.
Further, (other than indices), sequential sells are generally less likely to succeed than longs (in my limited two-three yr experience, this observation could be biased as the Nifty has been strong in these years)
Combo signals alone (without sequential) either way are most likely to fail.
Vivek