{HEAD ~ A device} has {TAIL ~ a proximate end} connected to the first channel and a distal end connected to a support such that the assembly depends from the support 
{ HEAD ~ A device } has { TAIL ~ a proximate end } connected to the first channel and a distal end connected to a support such that the assembly depends from the support
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH