If your first line ends with cow,
Rhyme o w with plough;
Should your second nicely go,
Seek o long, as found in though;
Thirdly, would you try this too,
Double o is found in through;
Fourth, a variance we are taught,
Like an a u is heard in thought;
Speak you, fifthly, of a sorrow,
Give the o obscure in borough;
In the sixth place, you may pick up
Sound of u p in a hiccough;
Turn your seventh couplet off,
Assuming o f as in cough;
Eighthly, sing you of a rock,
Echo c k with a lough;
Ninth and last, and quantum suff,
Sound u f, and cry,–enough!

— I.J. Reeve, in The Wild Garland; or, Curiosities of Poetry, 1865