I want to apply cross product lacing just between elements inside the same sublist not between elements of diferent sublists to intersecting . I sure it maybe be easy but I struggle traying to get to.Idea is making the less steps as possible as a simple way.
Not all “list level / lacing applications” are possible with a given list structure. Both target the structure of the list, not the indices.
In this case you’ll have to break apart your list (if it has a known number of sublists) or duplicate the sublists so that each value has a sublist to iterate with.
If you gave us more context we might also be able to suggest a better option.