the following list is far from complete. It just lists what I could immediately think of…
http://example.com/{foo}{bar}
http://example.com/{foo,bar}
http://example.com/{?foo*}{&bar*}
?one=alpha&two=bravo
~?two=bravo&one=alpha
- while they are different URIs by way of RFC 3986, most web applications neither differentiate them, nor enforce one or the other. Since applications (usually) don't fail on "wrong parameter order", developers tend to handle this rather lax