7. 



b 



c 

 d 



e 

 f 



g 



h 

 i 



J 

 k 



R1-I5-F11 



R1-I1-F2 



R1-I2-F3 



S 



S 



R1-I3-F1 



R1-I13-F17 



R2 



— * 



S 

 R2 



R1-I4-F17 



R2-I4-F9 



R3-I5-F21 



R1-I5-F17 



Rl 



Rl 



Rl 



R1-I5-F17 

 R2 



R2-I5-F18 



R1-I7-F27 



Rl 



Rl 



Rl 



S 



S 



S 

 S 

 S 



s 

 s 



R2-I1-F1 



S 



R1-I3-F2 



R2 



R1-I4-F9 



S 



S 



s 



R3 



R4 



R1-I1-F2 



Rl 



S 



Rl 



Rl 



Rl 



R2 



Rl 



R1-I1-F2 



R2 



R2 



S 



R3 



R3 



Rl 



Rl 



Rl 

 Rl 

 Rl 



R1-I6-F29 



R1-I6-F42 

 R1-I2-F12 

 R2 



Rl 



R2-I7-F33 



Rl 



R1-I1-F8 

 R1-I4-F1 

 Rl 



Rl 



R1-I2-F6 



bb 



Rl 



R2-I1-F6 

 R3-I3-F8 



R2-I9-F32 

 R3-I8-F27 



