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Given the following grammar: X - > Y a | Z b where X , Y , and Z are non - terminals and a
Given the following grammar:
X Y a
Z b
where X Y and Z are nonterminals and a and b are terminal symbols. We don't know the details of Y and Z but assume that they themselves can be parsed by an LL parser and are not mutually recursive with X
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Depending on what Y and Z look like, the grammar for X might have a common left factor.
The grammar for X can be parsed by an LL parser no matter what Y and Z look like.
No matter what Y and Z look like, the grammar for X cannot be ambiguous.
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