Additionally, there are {HEAD ~ many flexible implementation options} of the challenge response application that can be adjusted based on {TAIL ~ factors} such as the location of the merchant or the location of the consumer 
Additionally , there are { HEAD ~ many flexible implementation options } of the challenge response application that can be adjusted based on { TAIL ~ factors } such as the location of the merchant or the location of the consumer
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH