[DCRM-L] Signature special characters question

[Marilyn McClaskey]

Here is the statement I have devised.  The issue is the duplicated A⁴
at the beginning.  I understand I should use superscript pi ahead of
the first one but neither Aleph nor Connexion has such a character.
Is this bracketed awkwardness the best I can do and you will all
understand it?   If I have misunderstood how to convey the situation,
please advise.

Signatures:  chi² [superscript pi]A⁴ A-O⁴ P⁴ (-P4) Q⁴ R².

Thanks.
-- 
Marilyn McClaskey
University of Minnesota Libraries