Wherein {TAIL ~ the interlinked linkage} is configured by {HEAD ~ a pair} of primary struts, and a pair of secondary bars pivotally interlinked with pinshafts at ends of the struts and the bars 
Wherein { TAIL ~ the interlinked linkage } is configured by { HEAD ~ a pair } of primary struts , and a pair of secondary bars pivotally interlinked with pinshafts at ends of the struts and the bars
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH