A fragment quoted by Athenaeus preserves an elided form of φίλημι:
ἔγω δὲ φίλημ᾽ ἀβροσύναν, καὶ μοι τὸ λάμπρον
ἔρος ἀελίω καὶ τὸ κάλον λέλογχεν.
These lines also appear, in a slightly different version, in P.Oxy. 1787 fr. 1, a papyrus that contained, among other things, line endings from the "Tithonus poem". This is fragment 58 in the Loeb ...
I came across this sentence in Plato (Symposium 206c):
τίκτειν δὲ ἐν μὲν αἰσχρῷ οὐ δύναται, ἐν δὲ τῷ καλῷ.
And it cannot beget on the ugly, but on the beautiful.
This μέν...δέ sentence omits the verb (δύναται) in the second part of the sentence and uses δέ to make up for it. So your third example sentence, with a non-final δέ, seems to be permitted in ...