For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3. ε is the empty string, $ indicates end of input, and | separates alternate right hand sides of productions. S → a A b B|b A a B|ε A → S B → S a b $ S E1 E2 S → ε A A → S A → S error B B → S B → S E3
0. The appropriate entries for E1, E2 and E3 are