My coworkers like to talk...a LOT. Sometimes the distraction is too much for me; I'm not very good at multitasking. Unfortunately we're in a very small office with limited space, so there's nowhere else for me to go. Sitting right by them is the only option I have. I could get noise canceling headphones but don't want to seem super antisocial or rude. I'm not the kind of person who's blunt enough to ask them to stop chatting, but I'm having a hard time getting my work done. Any advice?