{HEAD ~ A storage medium} may be coupled to {TAIL ~ a processor} such that the processor can read information from, and write information to, the storage medium 
{ HEAD ~ A storage medium } may be coupled to { TAIL ~ a processor } such that the processor can read information from , and write information to , the storage medium
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH