We find the dis-  tributions over the frequencies of particular errors follow a Zipfian skew across both S&B datasets, with the Arabic being more pronounced (the most frequent error being made 27 times, with 627 errors being made just once) in comparison with the Hebrew (with the most frequent error being made 19 times, and with 856 isolated errors).
the only parameter not present in our model is the probability θ of generating a morpheme as opposed to stopping to gener-ate morphemes (with probability 1 − θ).