Given the following relation instance
$$\eqalign{
& X\,\,\,\,\,Y\,\,\,\,\,Z \cr
& \,\,1\,\,\,\,\,\,4\,\,\,\,\,\,2 \cr
& \,\,1\,\,\,\,\,\,5\,\,\,\,\,\,3 \cr
& \,\,1\,\,\,\,\,\,6\,\,\,\,\,\,3 \cr
& \,\,3\,\,\,\,\,\,2\,\,\,\,\,\,2 \cr} $$
Which of the following functional dependencies are satisfied by the instance?