4-4-0

noun 0.805

2-8-2

noun 0.774

4-6-2

noun 0.766

4-6-0

noun 0.755

2-8-0

noun 0.741

0-4-0

noun 0.728

4-2-4

noun 0.700

4-4-4

noun 0.690

2-6-0

noun 0.666

0-6-0

noun 0.636

4-4-2

noun 0.601

4-2-2

noun 0.594

4x2

noun 0.548

steam locomotive

noun 0.542

last four

noun 0.541

4x4

noun 0.541

train-of-four

noun 0.538

4-5-1

noun 0.533

4-3-3

noun 0.532

locomotive

noun 0.531

ten-four

noun 0.519

number eight

noun 0.515

four-way

noun 0.512

back four

noun 0.509

fourscore

noun 0.509