Note: One may be confused by § 14.11.2 and footnote 1 on p. 161, which seem to imply that infinitives and verbal nouns are disjoint concepts. This is however not the case, since § 14.2 clearly states that the infinitive is a special kind of verbal noun. Therefore, where the key states that nftft must be a verbal noun, technically this does not exclude the possibility that nftft may be more specifically an infinitive. Yet, according to § 14.11.2 it is more likely that nftft is a kind of verbal noun other than the infinitive.
Note: In the key, jtj should be jty or perhaps jtjj.
Note: Hsq is a passive participle, a verb form to be discussed in Lesson 23.