comma means token ','.

FIRST(E) = {i, n, (}
FIRST(A) = {i, n}
FIRST(L) = {(}
FIRST(S) = {i, n, (}
FOLLOW(E) = {$, comma, )}
FOLLOW(A) = {$, comma, )}
FOLLOW(L) = {$, comma, )}
FOLLOW(S) = {)}