Which is to Whether, since they're together,
Whether or not as to whence,
The three bastard children, of the five double-U brethren,
In Onomatopoeian defense,
Which is to what, why and/or how,
In numbers as common as sense,
And since they're related, as timestamps are dated,
When is to whence as past-tense,
Now, whether they're better, or left out altogether,
Something I'm quite keenly on the 'fence',
Which is why and/or whether, more important or better,
Neither are needed hence.