{HEAD ~ A method} 1, characterized in {TAIL ~ that said other periodic movement} has a frequency other than that of the rotating movement 
characterized in
{ HEAD ~ A method } 1 , characterized in { TAIL ~ that said other periodic movement } has a frequency other than that of the rotating movement
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH