Guide for robot_lever:

The first word describes the direction of the robot and the second word describes which way the lever is pushed/pulled.
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		can be mirrored to:
horizontal:
down_left	down_right
up_right	up_left

vertical:
right_down	left_down
left_up		right_up
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		can be played backwards to make:
horizontal:
right_right	right_left
left_left	left_right

vertical:
down_down	down_up
up_up		up_down
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The following are offset by 96 pixels along the x-axis instead of 32.
vertical left_up
horizontal left_left

all mirrored, except
   right_up
and
   left_right.
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