Can He? Reflects yr assessment of His capability as to whether he could or not.
Once this is settled in the affirmative, the next question is Would He?
Which means whether He would WILL his capabilities to be directed towards what u desire?
Now the subsidiary question is, why would He will to deploy his capabilities in yr favour?
Now u have to know or believe that He knows yr expectation and that u r worthy to receive His line of action favourable to u.
Now if He could and would, then the question When arises. Since u as well as yr desire could be limited by time, it becomes imperative to obtain an answer to this.
This is mostly to sustain yr Hope and expectation.
After this point, nothing sustains a man except His grace!