The term over and over again is identified in base64 scheme by the sequence b3ZlciBhbmQgb3ZlciBhZ2Fpbg==, while the MD5 signature is equal to e021c7e63887ff4bf77a827929fe7589. The ASCII encoding of over and over again in hexadecimal notation is 6f76657220616e64206f76657220616761696e.