... G(i−2, j2, k)× P (j1|j2) × P(l|j2j1)).end for end for for i = 4 to r do for (l, k) such that σ ∪ {k : c, l : Ci} is con-sistent do for j1, j2such that σ ∪ {k : c, j2:C[i−2], ... exact method for decipher-ing messages using a generalization of the Viterbi algorithm. We test this model on aset of ciphers developed from various websites, and find that our algorithm has ... rangeof σ, and then use our generalization of the Viterbi algorithm to find, for each p not in the domain ofσ, a score to rank the choice of p for c, namely thetrigram probability of the extension...