Among simple LR (SLR), canonical LR, and look – ahead LR (LALR), which of the following pairs identify the method that is very easy to implement and the method that is the most powerful, in that order?
1
SLR, LALR
2
Canonical LR, LALR
3
SLR, canonical LR
4
LALR, canonical LR
5
Question Not Attempted