@array1 = qq(13470660  13471850  14028274  14028286);
@array2 = qq(14028145  14028286  13476691  13471850);

# where the pairs are:

13470660 14028145
13471850 14028286  
14028274 13476691
14028286 13471850

# I want the result to be the following because 14028286 13471850 occur in each:

13470660 14028145
13471850 14028286  
14028274 13476691