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\item \ifassignmentsheet \points{2} \fi \applyCC{
$$\varphi_{EUF} \quad := \quad f(b)=a \land e=b \land c=f(c) \land d \neq f(e)
\land f(a)=f(d) \land a \neq f(c) \land d=f(a)$$
}