{HEAD ~ A display} 306 for confirming {TAIL ~ data reception} is attached to a container body 211 of a receiver side container 21 
for confirming
{ HEAD ~ A display } 306 for confirming { TAIL ~ data reception } is attached to a container body 211 of a receiver side container 21
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH