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+client_id;nom;prenom;email
+1;Durand;Jean;jean.durand@email.com
+2;Leclerc;Sophie;
+3;Muller;Marc;marc.muller@email.com
+4;Petit;Claire;claire.petit@email.com
+5;Martin;Paul;paul.martin@email.com
+6;Roux;Lucie;lucie.roux@email.com
+7;Blanc;Michel;michel.blanc@email.com
+8;Garcia;Isabelle;isabelle.garcia@email.com
+9;Nguyen;Thierry;thierry.nguyen@email.com
+10;Moreau;Alice;alice.moreau@email.com
+11;Nguyen;Thierry;thierry.nguyen@email.com
+12;Muller;Marc;marc.muller@email.com
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+1. (a+b)*a(a+b)*
+2. b*ab*
+3. (a+b)*a(a+b)a(a+b)*
+4. b*ab*ab*
+5. a*
+6. (a+b)*ab
+7. ab(a+b)*+ba(a+b)*
+8. (a+b)*+abba+(a+b)*
+9. a(a+b)*a+b(a+b)*b+a+b+
+10. (a+b)*a(b+a)*b
+11. b*(ab*ab*)*
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