ὀδοῦσι καὶ ὄνυξι καὶ πάσῃ μηχανῇ → tooth and nail | tooth, fang, and claw | in every possible way | by hook or by crook
παρ' ἄλληλα, πρὸς ἄλληλα, ἀνταποδοτικῶς