32.1 26.2 + the combination of both 33.2 27.5 32.7 26.8 + the combination of both 33.4 27.2  , then its distortion counterpart P s k i |h n−1 (t 1 i ), h n−1 (s k i ) and finally their combination, which yields the joint probability of the sentence pair.
the usual size of the short-list is under 20k, which does not seem sufficient to faithfully represent the translation models of section 2.