Maximum Losses/Wins

Has anyone ever done a study on what the percentages are of 7, 8, 9, 10, etc. winning/loosing streak?
If so, can someone please direct me to that study.
I want to know, say in 4000 hands, what are the probabilities of loosing runs and winning runs.
Obviously 1 loss will have the highest percentage, 2 losses in a row a slightly less percentage, etc...
Ultimately, I want to know what the greatest potential downturn (number of losses in a row) could be in 1000, 2000, 4000, etc. hands of blackjack.