In addition, {TAIL ~ the secondary memory device} may be removable and readable from {HEAD ~ other devices} 
In addition , { TAIL ~ the secondary memory device } may be removable and readable from { HEAD ~ other devices }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD