The difference between 14 and 12 is: 
The difference between 71 and 23 is: 
The difference between 14 and 12 is: 
The difference between 14 and 13 is: 
The difference between 74 and 12 is: 
The difference between 14 and 12 is: 
The difference between 20 and 18 is: 
The difference between 14 and 12 is: 