Anonymous PL/SQL Block

Write an anonymous PL/SQL block that accepts a string as input and removes all of the vowels (a.e.i.o.u) from the string, then outputs the results.
The output should look like this:
Run the Program
SQL>@rm_vowels
Enter the String: A penny for your thoughts
SQL>****************************
SQL>The new string is: pnny fr yr thghts

Solution I (PL/SQL block):

set serveroutput on
set verify off

accept vstring prompt "Enter the String: ";
declare...

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