----------------------------------------------------
---------------5------------------------------------
---0---5----------3--0---5----3---------------------
-----------2-3--------------------------------------
Fig. 2
----------------------------------------------------
---------------5------------------------------5-----
---0---5----------3--0---5----3---0---5----------3--
-----------2-3----------------------------2-3-------
end.1 end.2
--------------------------
--------------------------
--------------------------|-------------------------
--2-2--2-2--5--5--5-5-0-3-|-2-2--2-2--5--5--5-5-6-7-
--------------------------|-------------------------
Fig. 3
----------------------------------------------------
------5-----------------------5---------------------
---7-----7-5---------------7-----7---5-7------------
-------------7-5--3--2--0----------7----------------
2x 2x
end.1 end.2
--------------------------|-------------------------
--------------------------|-------------------------
------------5--5--5-5-0-3-|-----------5--5--5-5-6-7-
--7-7--7-7----------------|-7-7--7-7----------------
Fig. 4
----------------------------------------------------
---------------5------------------------------5-----
---0---5----------3--0---5/--3---0---5----------3--
-----------2-3----------------------------2-3-------
----------------------------------------------------
----------------------------------------------------
--2-2--2-2--5--5--5-5-0-3---------------------------
----------------------------------------------------
Fig. 5
----------------------------------------------------
---------------5------------------------------5-----
---0---5/--------3--0---5/--3---0---5----------3--
-----------2-3----------------------------2-3-------
----------------------------------------------------
----------------------------------------------------
--2-2--2-2--5--5--5-5-6-7---------------------------
----------------------------------------------------
