The long-time process of paradigm levelling in the present-tense third-person plural of the IV-verb-class has been in progress since the 17th century at least. The aim of this paper is to describe how the concurrence between the standard (prosí, trpí, sázejí) and non -standard forms (in particular prosejí/trpějí and sází) manifested itself in the works by Bohumil Hrabal (1914-1997). The inquiry into Hrabal‘s selected works (the sample contains 20 works written between 1938 and 1995) proves a context-bound prosejí/trpějí incidence as well as a rather less frequent incidence of the sází form.