2. 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