I have the Hecht-Hollander edited “Jiggery Pokery” (somewhere), and though they did say that the single-word line being #6 was ideal, #5 or #7 were acceptable as well. WH Auden proposed to ban adverbs as the single-word line, but this was not accepted as law.
Anyway, I have posted this somewhere before, perhaps even this site, though I hope not. I’ll try to come up with something new, but for now:
Higgledy piggledy
Marian Anderson
Eleanor Roosevelt
Asked to perform
(Unconstitutional
Hall having reckoned her
Coloratura not
Up to the norm).
Sorry to use “unconstitutional” again so soon, but it couldn’t be helped.