1 Context-Free Languages Are the following languages context-free or not? If yes, specify a context- free grammar in BNF notation that generates the language. If not, give an informal argument. (a) { ambc | m > n > 0,0 >0} , with alphabet = {a, b, c} (b) { a2n43n | n > 0 }, with alphabet = {a, b} (c) { wwR | W E I* and wR is w in reverse }, with alphabet ? ={a, b} (d) { a"b"c" dm | n > 0, m > 0 }, with alphabet E = {a, b, c, d} (e) { w l w has no more than 3 symbols), with alphabet ={a, b}