The "A" type barre chord, occasionally called the "double barre", is the A chord shape (X02220) moved up and down the frets. To barre the A chord shape, the guitars puts the index finger across the top five strings, usually touching the 6th string (E) to mute it. They then barre either the ring or little finger across the 2nd (B), 3rd (G), and 4th (D) strings two frets down, or one finger frets each string. For instance, Barred at the second fret, the A chord becomes B (X24442). From fret one to twelve, the barred A becomes B, B, C, C, D, E, E, F, F, G, A, and at the twelfth fret (that is, one octave up), it is A again.