Üben: codieren 0 1 0 2 0 3 1 4567 0 1 0 2 1 3 1 4567 0 1 1 2 1 3 0 4567 0 1 0 2 0 3 0 4567 0 1 1 2 0 3 0 4567 0 1 0 2 1 3 0 4567 0 1 1 2 0 3 1 4567 0 