1 [12pt] Give regular expressions generating the following languages. In all parts, = {0, 1): (a)(w | w has length at least 5 and its third symbol is a 0} (b)(w I w starts with 1 and its length is divisible by four, or w starts with 0} (c) w w doesn't contain the substring 10) (d) w the length of w is at most 4) (e)(w I w is any string except , 0, and 00) (f) w every even position of w is a 1