manipulation part b

 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b
 manipulation part b