Under the Whyte notation system, a steam locomotive that has four leading wheels arranged in a leading truck, eight coupled driving wheels and two trailing wheels in a trailing truck.

Under the Whyte notation system, a steam locomotive that has two leading wheels, four pairs of coupled driving wheels, and two trailing wheels.

Under the Whyte notation system, a steam locomotive that has eight coupled driving wheels followed by two trailing wheels, with no leading wheels.

Under the Whyte notation system, a Mallet-type locomotive with two leading wheels on a leading truck, two sets of eight driving wheels, and two trailing wheels on a trailing truck.

Under the Whyte notation system, a Mallet-type locomotive with four leading wheels on a leading truck, two sets of eight driving wheels, and two trailing wheels on a trailing truck.

Under the Whyte notation system, a steam locomotive that has two leading wheels, three sets of eight driving wheels, and a two trailing wheels.

Under the Whyte notation system, a Garratt steam locomotive that is articulated in three parts, with a boiler mounted on the centre frame, and two steam engines mounted in opposite directions on separate frames, one on each end of the boiler, and each engine having a 2-8-0 wheel configuration.