{HEAD ~ The announcement} may also prompt the caller to enter {TAIL ~ an identifying code} that they have been assigned by the called party, e.g., a personal identification number  
{ HEAD ~ The announcement } may also prompt the caller to enter { TAIL ~ an identifying code } that they have been assigned by the called party , e.g. , a personal identification number
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH