1 2 3 4 5 6

E H E E H E

* X - t C t

  * X C X X

    * t X -

      * X -

        * X

          *

handedness 1 2 3 R

handedness 2 3 4 L

handedness 3 4 5 R

handedness 4 5 6 R

handedness 5 6 1 L

handedness 6 1 2 R

handedness 1 2 5 L

sheetS 1 3 4 6