adverbials; frequency distribution; model; Zipf-Alekseev function; power law; unified theory

It is demonstrated that adverbials manifest the same distributional universals as other types of constituents, and they abide by the same statistical law(s). As for models, we tried to demonstrate that the choice of the model is not a trivial task; particularly, three models were used: 1) Zipf-Alekseev function, 2) power law, and 3) function derived from the unified theory.