iPhone shortcut how to crop multiple times? How to crop Variable?

I need help with A4 Page PDF which cannot convert to Table by App; I am doing

1. Crop screenshot from top right.
2. Crop screenshot from top left
3. Crop item 2 from top right
4. Combine items 1 & 3 horizontally and added to variable
5. Crop item 4 from bottom Left

I am stuck @

A. Item 4 above doesn’t work using “add image to variable” but “cropped image” which creates troubleshooting work because for multiple cropped images but Shortcut doesn’t show which cropped image I chose.

B. item 5 above doesn’t work using “add image to variable” nor “cropped image”