On which network did 'Beavis and Butt-Head' originally air?

On which network did 'Living Single' originally air? In what year did 'Living Single' premiere? Where is 'Living Single' set? Who created 'Living Single'? In what year did 'Beavis and Butt-Head' premiere? Where is 'Beavis and Butt-Head' set? Who created 'Beavis and Butt-Head'? In what year did 'Friends' premiere?