Farewell

Just few letters
would have formed the puzzle
with no verb, nor noun, or pronoun,
and one after the other,
they could have shaped a sound,
a murmur, mumble,
mutter, or a rustle.
The swish of a clean lean stream,
a gurgle of near by brook.
A whine, a wheeze, a cry.
The babble ripples make
when a pebble tumbles in a well.
A moan, a whisper or a hum.
Or just a sigh that hissed
Goodbye.