τῶν οἰκιῶν ὑμῶν ἐμπιπραμένων αὐτοὶ ᾄδετε → your homes are on fire and all you can do is sing
3ᵉ pl. opt. ao.2 de δίδωμι.
δοῖεν: 3 л. pl. aor. 2 opt. к δίδωμι.