4. (2 marks) Let S = {0,1} and consider the state-transition diagram given in Figure 1. 0 A B 0 1 1 1 1 1 1 0 C D 0 Figure 1: State-transition diagram for Question 4. (a) Give examples of three strings that are accepted by the state diagram and examples of three strings that are not accepted by the state diagram. (b) Write out explicitly the transition table (or transition function) that defines the state transitions of the diagram