The 26 buses involved between bb and bn are..
SBS 1943 Z
SBS 1959 D
SBS 1990 L
SBS 2605 T
SBS 2606 R
SBS 2611 A
SBS 2626 H
SBS 2671 B
SBS 2689 B
SBS 2712 S
SBS 2717 D
SBS 2721 R
SBS 2724 H
SBS 2707 H
SBS 2740 K
SBS 2742 E
SBS 2757 M
SBS 2759 H
SBS 2766 L
SBS 2777 E
SBS 2795 C
SBS 2821 K
SBS 2824 C
SBS 2828 S
SBS 2829 P
SBS 2830 J
All Mk4 Striders from bb to bn
All Mk4 DM3500s from bn to bb
Exceptions are SBS 2689 B, SBS 2707 H, SBS 2712 S, SBS 2777
E, SBS 2795 C