zip7 is:exact

The zip7 function takes seven lists and returns a list of seven-tuples, analogous to zip. It is capable of list fusion, but it is restricted to its first list argument and its resulting list.
zip7 takes seven vectors and returns a list of seven-tuples, analogous to zip.
Like zip, but works with 7 collections.
Zip seven infinite lists.
zip7 seven lists together.