{HEAD ~ The object} is achieved by embodiments of methods or {TAIL ~ devices} according to the present invention 
{ HEAD ~ The object } is achieved by embodiments of methods or { TAIL ~ devices } according to the present invention
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH