{TAIL ~ These spreadsheet models} are what simulate {HEAD ~ actual business functions} and become a task that will be performed by a student 
{ TAIL ~ These spreadsheet models } are what simulate { HEAD ~ actual business functions } and become a task that will be performed by a student
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH