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<!DOCTYPE PROOF SYSTEM "http://a3pat.ensiie.fr/pub/a3pat.dtd">
<PROOF><SIGNATURE><SYMBOLLIST><SYMBOL arity="0" unmarked="f"><NAME>Marked_f</NAME></SYMBOL><SYMBOL arity="0" unmarked=""><NAME>c</NAME></SYMBOL><SYMBOL arity="0" unmarked=""><NAME>g</NAME></SYMBOL><SYMBOL arity="0" unmarked="c"><NAME>Marked_c</NAME></SYMBOL><SYMBOL arity="0" unmarked=""><NAME>f</NAME></SYMBOL></SYMBOLLIST><VARLIST/></SIGNATURE><PROPERTY criterion="dp" prop="sntrs"><SYSTEM><REWSYS><RULE><LHS>c</LHS><RHS>f</RHS></RULE><RULE><LHS>f</LHS><RHS>g</RHS></RULE></REWSYS></SYSTEM><CRITERION/><PROPERTY criterion="weakgraph" prop="sndp"><SYSTEM><DPSYS><REWSYS><RULE><LHS>c</LHS><RHS>f</RHS></RULE><RULE><LHS>f</LHS><RHS>g</RHS></RULE></REWSYS><DPLIST><DPRULE num="0"><LHS>Marked_c</LHS><RHS>Marked_f</RHS></DPRULE></DPLIST></DPSYS></SYSTEM><CRITERION><DAG approx="simpl"><CCLIST><NONSCC num="0"><NODE ref="0"/></NONSCC></CCLIST></DAG></CRITERION></PROPERTY></PROPERTY></PROOF>
