said {HEAD ~ first timer} being adapted to periodically establish {TAIL ~ the commencement} of a system on time; and 
adapted to periodically establish
said { HEAD ~ first timer } being adapted to periodically establish { TAIL ~ the commencement } of a system on time ; and
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH