Question: The topic is formal grammar in computer science. In the recursive-descent parsing, a direct/indirect left recursive rule disallows top-down parsing. In the following grammar, convert

The topic is formal grammar in computer science. In the recursive-descent parsing, a direct/indirect left recursive rule disallows top-down parsing. In the following grammar, convert it to the non-left recursive rules.

S -> Aa | b,

A -> Ac | Sd | epsilon

How would I convert this grammar to be non-left recursive?

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