The top left hand loop of the gallows characters is a 4. Who disagrees?

[Mark Knowles]

I think we have so many examples of the top left loops that we can look at them in aggregate and deduce the ideal shape the author is trying to draw. Which I think is a "4" shape or if you prefer a triangle shape. From one shape it could be hard to tell, but from over 1000 examples I think it should be possible to come to a precise conclusion. One could conclude, though I don't think so, that there is more than one kind of top left loop and so there are at least two separate version of a glyph like the 't' shape.