Canine clutch skids on the main shaft to rotate with it. Each of the gear over the layshaft is mounted with it.  When the left-hand Doggy clutch is introduced to skid for the remaining with the gearshift lever, it messes with the clutch equipment, and the higher-velocity gear is obtained. https://gearbox-auto13458.goabroadblog.com/32893397/fascination-about-gearbox-auto