Viable Prefix and Handles
https://gatecse.in/lr-parsing-part-2-language-of-ll-and-lr-grammars/
https://gatecse.in/lr-parsing-part-3-lr0-items-and-lr0-parsing/
https://gatecse.in/lr-parsing-part-4-slr-clr-lalr-and-summary/
Important Questions