How to define relaxed V2 languages and how to distinguish them from non-V2 languages

This paper provides evidence for the idea that relaxed verb-second (V2) languages exist and exhibt specific properties which distinguish them from both strict V2 and non-V2 languages. The identification of the relaxed subtype of V2 languages implies that V2 should not be understood as a linear restriction, but as an abstract rule involving the movement of the finite verb to a head of the left periphery in all main clauses