8 

 24 



12 



36 



I . I 



I > . I 



s . >_[ 



- 2- 



24.8 



1 2 . 36 



26.12 



16.48 



48. 16 



20 . 60 



60.20 



24 . 72 



72. 24 



28.84 



e d 



12 -'4 



048 



36 

 12 



84 . 28 



90.30 



