The term written communication is identified in base64 scheme by the sequence d3JpdHRlbiBjb21tdW5pY2F0aW9u, while the MD5 signature is equal to 931ed0bcbd65356f6b04ae393d031966. The ASCII encoding of written communication in hexadecimal notation is 7772697474656e20636f6d6d756e69636174696f6e.