Volvo B10M MK2/MK3/MK4, Volvo B10BLE, Mercedes-Benz O405/O405G,
Scania N113CRB , Mercedes-Benz Citaro, Volvo Olympian Batch 1/2/3,
Volvo Super Olympian and Dennis Trident
There's one bus service that has ever used all these bus models as
perm buses. Which service is it?