καὶ αἱ στοαὶ κατὰ νώτου τῶν πυλῶν κατὰ τὸ μῆκος τῶν πυλῶν τὸ περίστυλον τὸ ὑποκάτω.

1. καὶ
   and
2. αἱ
   the
3. στοαὶ
   colonnades
   porticoes
4. κατὰ
   according to
5. νώτου
   back
6. τῶν
   of the
7. πυλῶν
   gates
8. κατὰ
   according to
9. τὸ
   the
10. μῆκος
    length
11. τῶν
    of the
12. πυλῶν
    gates
13. τὸ
    the
14. περίστυλον
    peristyle
    colonnade
15. τὸ
    the
16. ὑποκάτω
    under
17.  
    .
     

And the colonnades were at the back of the gates according to the length of the gates, the peristyle below.