Intro:

Version  1:


     1)--------------------------------------------------------------|
     2)--------------8----7----8--------------10----8----10----------|
     3)----------------------------------7---------------------------|
     4)---------(b9)------------------(b9)--------------------------(9)--|
     5)----7---------------------------------------------------------|
     6)--------------------------------------------------------------|


     1)--------------------------------------7-----------------------|
     2)--------------10----8----10----------------8----7----8--------|
     3)---------7---------------------(7)----------------------------|
     4)----(b9)--------------------------------------------------------|
     5)--------------------------------------------------------------|
     6)--------------------------------------------------------------|



Version  2:


     1)--------------3----2----3--------------5----3----5------------|
     2)----------------------------------3---------------------------|
     3)---------4-------------------4------------------------(4)-----|
     4)----2---------------------------------------------------------|
     5)--------------------------------------------------------------|
     6)--------------------------------------------------------------|


     1)--------------5----3----5-----------7----3----2----3----------|
     2)---------3-------------------(3)------------------------------|
     3)----4---------------------------------------------------------|
     4)--------------------------------------------------------------|
     5)--------------------------------------------------------------|
     6)--------------------------------------------------------------|