ἐφ' ὅσον αὐτοῦ ἡ ὑπόστασις τῶν χρόνων ὑπῆρχεν → as long as his store of years lasted
subs.
Sketch in outline: P. ὑπογραφή, ἡ, περιγραφή, ἡ, σκιαγραφία, ἡ, τύπος, ὁ.