Same characteristics but different EAN

Hello all,

My client wants to creat a generic article with color characteristic BLUE and size characteristic XS, S, M, L, XL, XXL and again XS, S, M, L, XL, XXL. The reason for the duplication of the size characteristic is that each of the variant will have its own EAN.

I am not figurring it out how to do it in the same generic article. I think it is not possible, but maybe you have a diferente opinion.

I appreciate your time.

Best regards,

FCC