The x ESDS displace both the DES and UES once they have been used {TAIL ~ x number} of {HEAD ~ times}  
The x ESDS displace both the DES and UES once they have been used { TAIL ~ x number } of { HEAD ~ times }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH