1 2 3 4 5 6 7 8 9 10 E E E E E E E E E E * t X - X X - X - X * X - X X - X t X * X - - X t X t * X X t X t X * t X t X - * X - X - * X - X * X - * X * handedness 1 2 3 R handedness 2 3 4 R handedness 3 4 5 R handedness 4 5 6 R handedness 5 6 7 L handedness 6 7 8 R handedness 7 8 9 R handedness 8 9 10 R handedness 9 10 1 R handedness 10 1 2 L sheetS 1 2 4 7 9 sheetS 3 8 5 6 10 sheetD 1 10 sheetD 6 7