PROP the Origami detective (part 5)

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... She took a sheet of Origami paper and ...

folded the traditional cup.

The 'diagrams' are written in the OIL language. Maybe not exactly, but I read
the
full description of OIL after making this exercise.

Well this time I had no responses.
I don't know why ...

But this is the last part (lack of ideas and animo) ...