Let R (10*1+ 010*10)" and s-(0*10*10*)", both over -{0, 1} (a) Give an example of a string z that is both in R and in S (that is, z E Rns (b) Is it possible to find a string x that is in R and is not in S (that is, x E RnS)? If yes, write it down; if not explain briefly why. (c) Is it possible to find a string y that is in S and is not in R (that is, y E SnR)? If yes, write it down; if not explain briefly why