\begin{tikzcd}[ampersand replacement=\&,column sep=0em]             X \times Y \ar[r, "m"] \ar[d, "r"']\& Z \times W \ar[r, "n"] \& V\\             X \times Y \ar[r, "m"] \& Z \times \ar[r, "n"]W \& V    \ar[u, "h"']                 