The s Dm=f-forms constitute the central part of the Middle Egyptian verbal system. The difficulty in recognising and dealing with these forms throughout the history of research has brought about an inconsistent picture in the grammar books and is thus causing a lot of misunderstanding among students. This study compares 20 current grammars regarding the nomenclature used, as well as descriptions of morphology and use of the forms constituting the s Dm=f-paradigm. Each form is treated separately and introduced with a short history of research and use. Here the background is illuminate and the issues that have caused different understandings apparent in current grammars are addressed. In this part, some older grammars which are out of date, but still valuable for other reasons, are also examined. In addition, tables with morphology and nomenclature as well as an overview of s Dm=f-forms constituting the s Dm=f-paradigm in each of the grammars involved are also provided. The aim of this comparative study is to support understanding in basic, but also advanced studies of the s Dm=f-forms and is intended to assist students and anyone studying the Middle Egyptian verbal system.