This leads Sorace (2004) to the conclusion change of location (arrive) core unaccusative change of state (decay) continuation of state (stay) existence of state (exist) uncontrolled process (sweat) controlled motional process (swim) controlled nonmotional process (work) core unergative that it is the position of verbs on the SIH that decides the order of acquisition of unaccusative syntax.
it still remains unknown whether English, a language without auxiliary selection, also exhibits the same gradience in split intransitivity.