so messy. dont think 851 is partial WL but it is quite unlikely
for AM 851 buses to cameo on 969 WL slot 2 times
The normal seq for WL 969 is 320L (WL Split)317Y,(WL
Split),318U,727U,572Z,321J,(WL Split),319S and i definitely recall
very strongly just now it 46D was in between 1091M and 727U. Its a
bit unlikely its AM coz AM us always together with the exception of
572Z