Alternatively, one end of the first axle is pivotally inserted into the said first housing, the intermediate portion of the first axle is non pivotally fixed to the first aperture, and {TAIL ~ the other end} of {HEAD ~ the first axle} is pivotally inserted into the counter aperture formed in the first supporting member 
Alternatively , one end of the first axle is pivotally inserted into the said first housing , the intermediate portion of the first axle is non pivotally fixed to the first aperture , and { TAIL ~ the other end } of { HEAD ~ the first axle } is pivotally inserted into the counter aperture formed in the first supporting member
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