Synchronization may be facilitated by {TAIL ~ receipt} of a reference time event such that a clock is synchronized based on {HEAD ~ the reference time event} 
Synchronization may be facilitated by { TAIL ~ receipt } of a reference time event such that a clock is synchronized based on { HEAD ~ the reference time event }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD