diff --git a/l2/1.l b/l2/1.lex similarity index 100% rename from l2/1.l rename to l2/1.lex diff --git a/l2/2.l b/l2/2.lex similarity index 100% rename from l2/2.l rename to l2/2.lex diff --git a/l2/3.l b/l2/3.lex similarity index 100% rename from l2/3.l rename to l2/3.lex diff --git a/l2/4.l b/l2/4.lex similarity index 100% rename from l2/4.l rename to l2/4.lex