As shown in   bigram types is also reflected in the three-part distribution in Table 3: The number of POS trigrams occurring less than ten times is almost one third less in MED than in NEGRA or in NEWS; similarly, but less pronounced, this can be observed for POS bigrams.
the number of trigram types occurring more than 1000 times is even higher for MED, and the number of bigram and unigram types is about the same when scaled against the total number of types.