There are five numbers 2, 3, 4, 6, and 8. Take two numbers from each time and find the greatest common factor and least common multiple of these two numbers. How many groups can you write?
有2、3、4、6、8五个数，每次从中取两个数，求这两个数的最大公因数和最小公倍数，你能写出几组？
<result>10</result>