Examples from the Web for uo
The verbs of this class belong to the sixth ablaut-series ( 12), and accordingly have a in the present; uo in the pret.A Middle High German Primer|Joseph Wright
Therefore seeing that uo, and os, are proportionall to oy, they are both equall.
Now, by the 12 e. as ea is to ai: so is so to oy: and therefore, by the grant, so is uo to oy.
Frog in Maya is Uo which is also the name of the second month of the Maya year.Animal Figures in the Maya Codices|Alfred M. Tozzer and Glover M. Allen
But thou maist more fitly dispose and order this proportion thus: As ur, is unto nl: so is uo unto oy.