The author investigates the relations that hold between the Hungarian conjunctions 'de' (but) vs. 'pedig' (yet) on the one hand, and 'tehát' (hence) vs. 'hiszen' (since) on the other hand, relying on evidence drawn from Hungarian texts. In order to analyse surface relations, he creates a theoretical framework on the basis of Grice's conversational implicatures. (For details, see his The Place of Concession in Contrastive Structures. In: Sprachtheorie und germanistische Linguistik 13.2 (2003): 103 - 22.) The said framework treats 'de' and 'pedig' as constituting the main relation in a concept structure, while 'tehát' and 'hiszen' constitute sub-relations. The paper confirms the author's working hypothesis that the constructs formed with the conjunctions of coordination at hand (de hisz 'but then', de hát 'and yet', pedig hát 'even though') can be derived from a single common concept structure.