In a third scenario, in {HEAD ~ order} to accelerate {TAIL ~ debits}, the bank accelerates its depositors credits 
to accelerate
In a third scenario , in { HEAD ~ order } to accelerate { TAIL ~ debits } , the bank accelerates its depositors credits
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH