{HEAD ~ Articulated chassis} 14 is supported for over the ground travel by a pair of front wheels 22 mounted to front frame section 16, and {TAIL ~ a pair} of rear wheels 24 mounted to rear frame section 18 
{ HEAD ~ Articulated chassis } 14 is supported for over the ground travel by a pair of front wheels 22 mounted to front frame section 16 , and { TAIL ~ a pair } of rear wheels 24 mounted to rear frame section 18
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 OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH