Write the function
sort_type that take a string and returns another string whose characters are sorted by their types based on the following criteria: First, lower case characters sorted alphabetically followed by upper case characters. Second, numbers sorted in descending order. Third, punctuation should be sorted as
!,-.:;?. Any other character not mentioned above should be removed from the string.
sort_type('we all agreed; it was 3 magnificent evenings!') -> 'aaaacdeeeeeefgggiiiillmnnnnrssttvww3!;'