Consider the following statements:
S1: Whenever we apply transition on any symbol the lookahead does not change
S2: The lookahead has effect on items of the form
[$A\rightarrow \alpha \bullet \beta , a$] where β ≠ ∈ and [$A\rightarrow \alpha \bullet , a$]
Which of the above statements are true wrt LR(1) items?