Given R=(aaa*b* + bb*a*)* and S=(a*ba*b + ab*a)* a) Give an example of a string of length five that is neither in the language of R nor in S. b) Give an example of a string of length five that is in the language of S but not R. c) Give an example of a string of length five that is in the language of R but not S. d) Give an example of a string of length five that is in the language of R and S.