"Nor mouth had, no nor mind, expressed
What heart heard of, ghost guessed:"
— Two lines from a Gerard Manley Hopkins poem
as quoted by Caleb Murdock at . . .
https://www.ablemuse.com/erato/showthread.php?t=5356 .
From that same URL —
"And, Caleb, yes, 'sprung rhythm' has made it into dictionaries,
though even there, the association is with Hopkins."
For guess-ghosts —
"Spring is sprung, the grass is riz,
I wonder where the flowers is."
And for an able muse —
