What is the three shafts in a gearbox fitted to a front wheel engine rear wheel drive?

In a front-engine, rear-wheel-drive gearbox, the three shafts typically include the input shaft, the countershaft, and the output shaft. The input shaft connects to the engine and transmits power to the gearbox. The countershaft, also known as the intermediate shaft, houses gears that facilitate gear changes, while the output shaft delivers power to the rear wheels. This arrangement allows for efficient power transfer and gear selection to optimize performance.