Choose the components in a personal letter from the following sections.
(1) Body
(2) Addressee
(3) Professional Experience
(4) Greeting
(5) Addresser
(6) Educational Background
(1)(2)(3)(4)
(2)(3)(5)(6)
(1)(2)(4)(5)
(3)(4)(5)(6)
(1)(3)(4)(5)