1. Given ={0,1}, provide regular expressions generating the following languages (: optional): (a) L0={ww=4} (b) L1={ww4} (c) L2={ww contains 111} (d) L3={ww doesn't contain 111} (e) L4={w every even position of w is a 0} (f) L5={ww begins with 00 and ends with 1} (g) L4={ww contains at least one 0 and at least two 1's } (h) L6={ww=} (i) {,1} (j)