3. Convert the following EBNF rule taken from Pascal standard to ordinary BNF. (You wll need more than one rule, and you will need to introduce new nonterminals.) unpacked-conformant-array-schema { ";" bound-specification> } " ]" array-schema>) array "[ " bound-specification of (type-identifier| conformant- 4. The following BNF rules comes from Algol 60. Convert them to EBNF. Make the as short as possible. (Note: It is possible to replace all5 single EBNF rule) for list for list element | for list>, for list element for clause>-> #FOR#variable identifier :-for list #DO# for statement for clause> } " ]" array-schema>) array "[ " bound-specification of (type-identifier| conformant- 4. The following BNF rules comes from Algol 60. Convert them to EBNF. Make the as short as possible. (Note: It is possible to replace all5 single EBNF rule) for list for list element | for list>, for list element for clause>-> #FOR#variable identifier :-for list #DO# for statement for clause>