1Orayt can be found quicker than it's taken to type this out.
-snip-
I'll run you off a handful of 1Orayt to give you an idea what they look like.
I'd highly doubt that, since the uppercase o/O is on the list of invalid characters, hence none of those address prefixes is possible.
*Sigh* yes, true... there are exceptions such as L not l, o not O, i not I , however, I'll run off some
1orayt via Part Public Keys. (That'll teach me to copy and paste...) @_@ ...