Previous research such as (Fernández-González and Gómez-Rodríguez, 2012) and (Qi and Manning, 2017) proves that the widely-used projective arc-eager transition-based parser of Nivre (2003) benefits from shortening the length of transition sequences by creating non-local attachments.
they augmented the original transition system with new actions whose behavior entails more than one arc-eager transition and involves a context beyond the traditional two focus words.