Category in two different category

tu ne peus afficher plusieurs catégorie dans une catégorie cela n'as pas de sens ....

To be precise i have this configuration: A (A being the highest category) ->B(B is a sub category of a)->E (E is a sub category of b )
->C(C is a sub category of a)->E (E is a sub category of c)
I would like when i am on view of Category B or C that we can see the E category and and just have a url link to access on view of category E for SEO

with flexi you can display A with all item in A B C E (all sub category option in item list tab)

I do not try to make display items as below the E category there are still some categories that should show when we go on the category view E

i don't understand what you want ... but display subcategory in twice category isn't possible