διώκει παῖς ποτανὸν ὄρνιν → a boy chases a bird on the wing, vain pursuit
ἀσπίλωτος, ἀφόρυκτος, ἄμωμος, ἀμώμητος, ἀκήρατος, ἀσκηθής, ἄσπιλος
