The plurality of distribution devices distribute picture data according to the instruction, and {HEAD ~ the plurality} of receiving devices receive {TAIL ~ the picture data} according to the instruction 
receive
The plurality of distribution devices distribute picture data according to the instruction , and { HEAD ~ the plurality } of receiving devices receive { TAIL ~ the picture data } according to the instruction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH