29 



s 



S2 



Rl 



Rl 



Rl 



S 



S 



Rl 



R1-I2-F9 



R2 



Rl 



R1-I2-F6 



Rl 



Rl 



S 



S 



S2 



S2 



Rl 



Rl 



Rl 



S 



Rl 



S 



S 



Rl 



