• 4-6-4-4
• 4-6-4-4s

4-6-4-4 (suomeksi)

Määritelmät:

• Under the w:Whyte_notation, Whyte notation system, a duplex steam locomotive that has four leading wheels in a leading truck followed by six coupled driving wheels, a second set with four coupled driving wheels, and four trailing wheels in a trailing truck.