Which of the following languages are regular? Prove your answer. (1). {0^m 1^n 0^m+n : m 1, n 1}.

(2). {0^m 0^n 0^m+n : m 1, n 1}.

(3). {xwx^R : x (0 + 1) , w (0 + 1)}.

(4). {0^n1^m : n 1, m 1, n > m}