This is a 4x2 LEGO brick.  LEGO pieces come in all kinds of shapes. The general term for them is "LEGO elements."  (See the Elements file in the Build Instructions.)
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Steve Scherr
Virginia-DC FLL Referee Advisor

On Fri, Oct 25, 2019 at 1:47 PM Lahiri Hanumanula <[log in to unmask]> wrote:
Hi Everyone 

I see in the clarification that, the innovative structure need to be atleast as long as four-stud LEGO element.

Can anyone shed some light on what is a four-stud LEGO element?

Thanks,
Lahiri
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