The distribution of plaintexts is
P(1) = 0.05, P(2) = 0.20, P(3) = 0.20, P(4) = 0.15, P(5) = 0.20, P(6) = 0.20
The distribution of keys is
P(1) = 0.25, P(2) = 0.25, P(3) = 0.10, P(4) = 0.05, P(5) = 0.15, P(6) = 0.20
Encryption with the key 1 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {3,4,6,2,5,1}
Encryption with the key 2 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {1,2,4,5,6,3}
Encryption with the key 3 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {4,2,6,5,1,3}
Encryption with the key 4 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {4,3,5,1,6,2}
Encryption with the key 5 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {4,3,1,2,5,6}
Encryption with the key 6 maps the plaintexts {1,2,3,4,5,6} to ciphertexts {3,1,6,5,2,4}