1. Give a BNF grammar for each of the languages below: a. b. The set of all strings consisting of one or more as with a semicolon after each one. The set of all strings consisting of one or more as, with a comma between each 'a' and the next. (There should be no comma before the first or after the last.) The set of all strings consisting of an open bracket (the symbol D followed by a list of one or more digits separated by commas, followed by a closing bracket (the symbol ]). The set of all strings consisting of the keyword begin, followed by one or more statements with a semicolon aiter each one, Tollowed by the Keyword end c. d