I'd guess each section is unique so there is no frequency analysis; the next section is picked at random instead of saying "Whoop whoop" is followed by "gundam style" 20% of the time, by "hey sexy lady" 50% of the time and by another "whoop whoop" 20% of the time.

Surely in a Markov process the next state is picked at random with some probability distribution, which may be uniform.

Yeah, thinking about it some more, that seems to be correct. It isn't what people usually think about when they think about Markov models, but it qualifies.

Actually, I think this kind of Markov model might be a better introduction than some of the others I've seen, since it's extremely simple to understand.