Correct the EBNF to force at least one statement for each case or default and then convert the following EBNF into a BNF.

--> switch" ("(|) ") ""{" "}" --> case:{; }{case: {; } } [default:{; } ] --> switch" ("(|) ") ""{" "}" --> case:{; }{case: {; } } [default:{; } ]