The search starts from 15-precedente and ends after the first extension of the text window as sogno can be found in position p-1.
in all our experiments with GiZA++ we adopted a configuration of the system which is reported by the authors to produce optimal results, that is 1 5 H 5 3 4 4 4 5 4 , where the number in the base refers to the iBM models 1, 3, 4, and 5, H refers to the HMM training, and the superscript figures refer to the number of iterations.