Which rows are MCE on a a 738 where economy starts row 8 and ends row 33? According to seat guru, this is layout 2 where MCE is rows 8-10 and 16-17 (30 MCE seats over 5 rows).
https://www.seatguru.com/airlines/Am..._737-800_C.php
Seatmap on AA.com shows MCE for rows 8-9 and 16-17 (24 MCE seats).