+------+
                                                <>  R6  <>---
                                               / +------+
                        +------+     +------+ / 
                       <>  R2  <>---<>  R4  <>             
                      / +------+ \   +------+ \             
                     /            \            \ +------+
           +------+ /   +------+   \ +------+   <>  R7  <>---
       ---<>  R1  <>---<>  R3  <>---<>  R5  <>   +------+    
           +------+ \   +------+ \   +------+ \     
                     \            \            \ +------+
                      \            \            <>  R8  <>---
                       \            \            +------+
                        \            \
                         \            \ +------+   
                          \            <>  R9  <>---
                           \            +------+
                            \
                             \ +------+
                              <>  R10 <>---
                               +------+