what rhyme scheme is used in "She Walks in Beauty" by George Gorden, Lord Byron?

Libby’s Advice

I know you are desperate and keen,

For any answer you can glean.

But without the poem to read,

We cannot fulfill such a need.

It’s easy to just cut and paste

And post the poem here in haste.

Dearest, do us all a favour,

Give us the poem to savour.

Name the poet, quote the title;

As such clues, for us, are vital.

Do not ask too many questions,

If you want to get suggestions.

Tell us what you have discovered,

And that you have not uncovered.

Leave the rest to those who can help

And your teacher won’t see a whelp.