[split] recurring word sequences

[MarcoP]

These are the data I discussed with Emma.
I searched for repeating sentences, including those that span over two lines. The python script I used for this test is better than the quick search I did yesterday: in Takahashi's transcription, the VMS appears to have two 4-words repeating sentences.

shedy.qol.shedy.qokaiin
f78r.P.38
f80r.P.25

ol.shedy.qokedy.qokeedy
f75v.P2.21
f84r.P.10

I only checked for sequences at least 3-words long. Adding 2-words sequences could be an interesting experiment.
I compared Quire13 with samples of a similar length, because the VMS seems to be less homogeneous than works like the Genesis of Dante's Inferno. Quire 13 is the only section of the ms with 4-words repeating sentences: others sections would have given a non-zero result only for 3-words sequences. 

Pliny's Historia is made of relatively short books on different subjects, so it could be a better comparison. My impression is that the amount of repeating sentences is strongly dependent of the style and personal preferences of the author.