Each transducer can be in {HEAD ~ communication} with {TAIL ~ a header} for supporting the transducer 
with
Each transducer can be in { HEAD ~ communication } with { TAIL ~ a header } for supporting the transducer
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH