Grantha encoding question

[James Kass]

In preliminary Grantha encoding proposals there were characters which 
don't seem to have been accepted into the Standard.

What is the recommended encoding for the Grantha letters NNNA, RRA, and 
LLLA/ZHA?  (Originally proposed for U+11329, U+11331, and U+11334 
respectively.)

Here's a link to one of the earlier proposals:
https://www.unicode.org/L2/L2010/10426-grantha-proposal.pdf

A graphic is attached showing the three characters.
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