A stanza of eight lines of iambic pentameter rhymed a b a b a b c c. Used by Italian writers such as Ariosto, it was brought into English writing by Wyatt in the sixteenth century and used to great effect by Byron in Don Juan.
I want a hero, an uncommon want,
When every year and month sends forth a new one,
Till after cloying the gazettes with cant,
The age discovers he is not the true one.
Of such as these I should not care to vaunt;
I'll therefore take our ancient friend Don Juan.
We all have seen him in the pantomime
Sent to the devil somewhat ere his time.