Creating matrix on HP 50g

[Cancuino]

That's a great way to store them. Thank you Tugdual.
I'm trying to make everything automated, so that I end up with the three matrixes stored in three different variables.
I know how to decompose the list and store the matrixes but I can't figure out how to sort them.

Edit: I've finally found the way to do it. "K" i + creates "Ki" then I use ->OBJ and I have 'Ki', where I can store the matrix.