A recursive function mystery$($x$)$ is defined as follows.

def mystery$($x$)$:

if x $==0$:

return $0$

mystery$($x$-1)$

print$($x$)$

When called, mystery$(4)$ will print $4$ outputs. Enter the first output of mystery$(4)$ in the first blank and so on$.$

You must enter all blanks correctly to get this question correct.