Some predicates in DGS only take a single argument, yet we split these predicates into two subclasses based on the kind of argument they take. Unergative verbs typically take arguments with the semantic role agent (b), while the arguments of unaccusative verbs are themes (a).
a. h1: summer flower bloom
h2: flower
‘In summer, flowers bloom.’
b. m-a-x laugh
‘Max is laughing.’