E................................. B.0..0..1..3...... G................................... E...0............................. B.0...3..3.1..1..0..1. G.................................... E.......0..1...... B..2..2................. G........................... E......................... B......3..1..1..0..0....0. G..2..................2... E.............................. B..........................0. G....0.....0.....2....... E............................................ B.....1...0....0......................... G..0................2...2....0.....2. E............................................ B............................................. G..............0....2.......2....0....... D...4...4.............4...............2..