[1] δύναμαι is a deponent verb and actually there are no records in Greek writers of this theoretical active form δύνημι . Nonetheless it occurs in different lexicographic texts, e.g. Etymologicum Magnum and Etymologicum Gudianum, always to explain δύναμαι . In Etym.Magn. 290.24 (probably taken from Choeroboscus’ commentaries on the Psalms) the same verb is glossed in the subjunctive mood, as here, but in the third person plural: “δύνωνται : “from δύνημι : from which the passive δύναμαι ; the subjunctive, ἐὰν δύνωμαι . And it should be ἐὰν δυνῶμαι , like τιθῶμαι , but there is a rule saying that a -mi verb is properispomenon in the subjunctive [middle-passive], whenever the present [active] form occurs in practice: e.g. τίθημι , ἐὰν τιθῶμαι , ἵστημι , ἐὰν ἰστῶμαι . But when this form does not occur in practice, then [in the middle-passive form] it is proparoxytone: e.g. δύνημι, ἐὰν δύνωμαι , for δύνημι does not occur in practice. And the plural δύνωνται ”. Here Etym.Magn. seems not to take into account -νυμι verbs, which are proparoxytone in the subjunctive middle-passive form: e.g. δείκνυμι , in subjunctive form δεικνύωμαι .
[2] Perispomenon: a word with circumflex accent on the last syllable.
[3] Properispomenon: a word with circumflex accent on the penult. Nonetheless there is at least an exception for the second person singular, which is perispomenon also in the middle-passive form.
[4] Proparoxytone: a word with acute accent on the antepenult.
[5] Even if not explicitly as in Etymologicum Magnum, the compiler is recognising that the form δύνημι does not exist in practice; cf. n.1 above.
[6] Homer, Iliad 14.196 (with the participle τετελεσμένον translated according to G. Autenrieth: see web address 1 below), followed by Aristonicus’ scholion on the line.