The term horizontal combination is identified in base64 scheme by the sequence aG9yaXpvbnRhbCBjb21iaW5hdGlvbg==, while the MD5 signature is equal to 2de75949fac9cd8f44b715ef817c82b5. The ASCII encoding of horizontal combination in hexadecimal notation is 686f72697a6f6e74616c20636f6d62696e6174696f6e.