As expected, the effect of reduced history is apparent from an in- In the trigrarn model, -log P(houselthe, dog) = 4.8 and -log P(doglin, the) = 5.4, giving a score of 10.2 to the segmentation dog house.
due to the error in transcription, the trigram in the doghouse is never encountered in the training data, although the bigram the doghouse is.