diff --git a/test.js b/test.js
new file mode 100644
index 0000000..2ab2c14
--- /dev/null
+++ b/test.js
@@ -0,0 +1,18 @@
+function check_time_regexp(regexp, text){
+    var t0 = new Date().getTime();;
+    new RegExp(regexp).test(text);
+    var t1 = new Date().getTime();;
+    console.log("Regexp " + regexp + " took " + (t1 - t0) + " milliseconds.")
+}
+
+// This payloads work because the input has several "a"s
+[
+//  "((a+)+)+$",  //Eternal,
+//  "(a?){100}$", //Eternal
+    "(a|a?)+$",
+    "(\\w*)+$",   //Generic
+    "(a*)+$",
+    "(.*a){100}$",
+    "([a-zA-Z]+)*$", //Generic
+    "(a+)*$",
+].forEach(regexp => check_time_regexp(regexp, "aaaaaaaaaaaaaaaaaaaaaaaaaa!"))