# After duplicates have been removed
# @a = ( 20, 33, 60 );
# @b = ( 2, 5, 12, 16, 23 ); 

60 / 12 = 5 / 1

# @a = ( 20, 33, 5 );
# @b = ( 2, 5, 16, 23 );

20 / 5 = 4 / 1

# @a = ( 4, 33, 5 );
# @b = ( 2, 16, 23 );

16 / 4 = 4 / 1

# @a = ( 33, 5 );
# @b = ( 2, 4, 23 );