Only the words that are made up of them do. The individual letters in a word don't mean anything. By themselves, they simply indicate what sound you're supposed to make. For example, the letter s indicates the s sound (which sounds like ssssss).
About Rupert Boneham. Rupert Boneham (born January 27, 1964) is an American mentor for troubled teens, who became known to reality television audiences in 2003 as a contestant on Survivor: Pearl Islands where he placed 8th. He later appeared on the All Stars, Heroes vs. Villains, and Blood vs. Water seasons of Survivor, placing 4th, 6th, and 20th respectively.
For the first season, James Garner played Bret Maverick in the majority of the stories. On July 29 and August 6, 1957, before the series went went before the camera, the studio had produced screen tests with the intention of hiring someone to play the role of Bart Maverick, Bret's brother. In the screen tests, James Garner played the role of Bret Maverick and Don Durant as Bart Maverick. (Rod Taylor also played the role of Bart Maverick for the August 6, 1957 screen tests.) Les Martinson was the director. Jack Kelly ended up getting the role, not Durant or Taylor.