Given the following text in a document:

--

(12) Examples of Irregular Verbs in English

a. John sat on the chair.
b. Mary sang the song well.
c. Alice thought up an excuse.

--

I would like to be able to add something like the following in the text:
"Example (12b) is interesting as it illustrates what was once a regular
process in English verbal morphology: sing, sang, sung; ring, rang, rung,
etc...."

The problem is this. When I select "full context" in the cross-reference
dialogue box, I get the following: "Example (12)b is interesting..." In other
words, I get "(12)b" instead of "(12b)." This is strange because, as far as I
know, no publisher hasa style manual that uses (12)b...rather, everyone uses
(12b). Does anyone know a way to get Word to do this?