When the process didn't work, we tried a variation.

(less common)

Its 50 H-7 2-8-8-2's (30 of which found their way onto the Union Pacific roster in 1945) were simple mainly because a tunnel in the Alleghenies would not accommodate the low-pressure cylinders of any Mallet larger than a 2-6-6-2.

[P]=1ifPistrue;\0otherwise.