Do you see same patterns?

[Anton]

That's the point that I don't understand too. A pattern is something systematically re-occurring. However, e.g. R1 in the upper figure is not the same as R1 in the lower figure. In the former case we have three vords in sequence, in the latter - two vords. In the former, the three vords end with y, in the latter - with or. In the former case all three vords begin with the same glyph (assuming ch and sh is the same thing), in the latter  - they do not. So where is the "pattern" here (except that in both cases the first two vords end similarly to each other, but this definitely does not hold for any VMS paragraph)?