combine
    /file1 *(rw,sync,no_root_squash,no_subtree_check)
with
    192.169.32.0/255.255.255.0
    192.169.72.0/255.255.255.0
    192.169.73.0/255.255.255.0

to get
    /file1 192.169.32.0/255.255.255.0(rw,sync,no_root_squash,no_subtree_check)
    /file1 192.169.72.0/255.255.255.0(rw,sync,no_root_squash,no_subtree_check)
    /file1 192.169.73.0/255.255.255.0(rw,sync,no_root_squash,no_subtree_check)