How to calculate probability of an event will happen multipe times in a row

I want to know how to calculate how many times did Over or Under happened in a row. For instance 6U in a row happened 5 times, 5U in a row happened 10 times etc. There is third result T, It should be skipped, like it is not there.

I also want to calculate what is the probability of happening U after 3 Us, for instance. What is the probability that 2, 3, 4 Overs or Unders happen in a row?

The data in the attached file is just small par of the data that i'll be analising .