1a. For each of the following non-terminals of Atto-c, give the FIRST set of tokens that its right side could start with. Note: Atto-C is not perfectly predictive, so a token could appear in the FIRST of more than one non-terminal. external-definition function-definition parameter-list data-definition declarator-list compound-statement declaration-list statement expression 1b). For lists of arbitrary length, to help know where the list ends, it is good to know the tokens that can come immediately after the list, while not being part of the list itself. This set of tokens is known as the FOLLOW set. Give the FOLLOW sets of tokens for these nonterminals: parameter-list declarator-list declaration-list statement-list expression 1a. For each of the following non-terminals of Atto-c, give the FIRST set of tokens that its right side could start with. Note: Atto-C is not perfectly predictive, so a token could appear in the FIRST of more than one non-terminal. external-definition function-definition parameter-list data-definition declarator-list compound-statement declaration-list statement expression 1b). For lists of arbitrary length, to help know where the list ends, it is good to know the tokens that can come immediately after the list, while not being part of the list itself. This set of tokens is known as the FOLLOW set. Give the FOLLOW sets of tokens for these nonterminals: parameter-list declarator-list declaration-list statement-list expression