Calculate total number of levels of nesting paranthesis for each letter in input string :  
 I have input string 
 ```
   `(a ( b c ) ( d ( e ) ) )`
```
  I want to calculate total number of nested paranthesis for each 
   character 
```   
for example output should be for a -> 1
   b and c and d -> 2
   and for e -> 3
```
