2. for each of the sequences (1,2,2,3,3), (1,2,3,4) and (2, 2, 2, 2, 2, 2) answer the following questions. (a) does there exist a graph with that degree sequence? (if yes, draw one. if no, motivate why.) (b) does there exist a simple graph with that degree sequence? (if yes, draw one. if no, motivate why.) (c) do there exist at least two non-isomorphic simple graphs with that degree sequence? (if yes, draw two such graphs. if no, motivate why.)