Simply set focus to the first 'Begin' button, then say "press down".
If successful, focus will be moved to each element type within the section until it reaches the "End" button.
If focus gets stuck on a particular element, it will be clear which is problematic for voice navigation software.
Also, if the course works in the keyDown section and not in keyUp, or the reverse, it will indicate a particular event type dependency by the voice navigation software.