Maybe KJ SDs will be A22 & OC500LE and DDs will be B9TL
& E500 plus a minority of A95.
WL SDs will be majority A22 with a small fleet of Citaro while
DDs is E500,A bit of B9TL and A95.
AM SDs will be majority A22 & Citaro with OC500LE make a
small number while DD is majority of A95 & E500.
WL only got 5 E500, 7 A95, 13 B9TL to play with..