1. This is essential for ambiguous grammars such as used for human languages. 2. See ambiguous grammar # Recognizing ambiguous grammars. 3. See ambiguous grammar # Recognizing ambiguous grammars . 4. LR parsing is not a useful technique for human languages with ambiguous grammars that depend on the interplay of words. 5. A recognition algorithm that accommodates ambiguous grammars with direct left-recursive rules is described by Frost and Hafiz in 2006. 6. :: : The solution where there is an ambiguous grammar problem is to rewrite the text to remove the ambiguity. 7. Ambiguous grammar may result in ambiguous parsing if applied on homographs since the same word sequence can have more than one interpretation.8. Note that there may be multiple distinct ways to parse a string while finishing at the same index : this indicates an ambiguous grammar . 9. The LL ( " k " ) grammars therefore exclude all ambiguous grammars , as well as all grammars that contain left recursion. 10. However, there are certain languages that can only be generated by ambiguous grammars ; such languages are called " inherently ambiguous languages ".
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