At step 25, {TAIL ~ the ACS} 1050 assesses risk level and presents challenge for {HEAD ~ high risk transactions} 
At step 25 , { TAIL ~ the ACS } 1050 assesses risk level and presents challenge for { HEAD ~ high risk transactions }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD