Complex sentence: The classifiers (ɬ) and (d) regulate transitivity: (ɬ) increases transitivity by creating causatives and the (d) classifier lowers transitivity to create middle voice.
Split into simpler sentences: The classifiers (ɬ) and (d) regulate transitivity: (ɬ) increases transitivity by creating causatives. The (d) classifier lowers transitivity to create middle voice.