With a child's fondness for the indigestible, she had once declared that Mrs. Turner's turnovers were "sim-ply de-lic-IOUs," and they had teased their mother ever since to make one for their new friend.
"The Brass Bound Box"
Evelyn Raymond
You really make a man thoroughly bill-IOUs.
"The Worlds Greatest Books Vol. II: Fiction"
Arthur Mee, J. A. Hammerton, Eds.
The three vowels iou, in the termination IOUs, often fall into one syllable, and form a triphthong.
"The Grammar of English Grammars"
Goold Brown