Here's some input about preparing your competency examples for your job interview. Your competency example lets you demonstrate the depth of your experience in the details of that example. Using different examples for each competency will let you demonstrate the breadth of your experience throughout the interview.
Select your competency examples carefully. Remind yourself of the details of that example. It's good practice to prepare a detailed second example for each competency. This will help you ensure that no matter how the question is phrased, that one of your examples will match what the interviewer is looking for.
My interview tips are based on my years of interviewing experience and my years of interview coaching. I hold qualifications in HR and Business Psychology.