In one embodiment of the invention {HEAD ~ the first carrier} is stationarily mounted with {TAIL ~ respect} to the support structure 
is stationarily mounted with
In one embodiment of the invention { HEAD ~ the first carrier } is stationarily mounted with { TAIL ~ respect } to the support structure
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH