plainText:="WELLDONEISBETTERTHANWELLSAID";
println("The original plaintext is : ",plainText);
println("\nThe left and right alphabets after each permutation"
         " during encryption are:");
cipherText:=Chao.encode(plainText);
println("\nThe ciphertext is : ",cipherText);

plainText2:=Chao.decode(cipherText);
println("\nThe recovered plaintext is : ",plainText2);