alternate note of trill and its accidental

[Jacob Smullyan]

Hi --
 
I'd like to be able to specify the chromatic alteration of a trill's
alternate note, by placing the accidental over the trill sign.  (In
fact, I'd really prefer to extend with trill with a wavy line and
extend that over multiple notes, changing the alternate pitch over
different noteheads but using only one trill sign -- but for my first
day of lilypond typesetting I'd be quite happy to accomplish the
former, lesser goal!) 

I have not yet been able to find an example of this anywhere.  Does
anyone know the/a right way to go about this, or have a pointer about
roughly how to approach it?

Thanks,

Jacob Smullyan

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