3. a) Find simple connected graphs with the following vertex degrees if possible. If suckh graphs are not possible explain why. 22 22 3 3 3 3 4 44 1 2 3 3 4 b) Find simple connected graphs with the following vertex degrees if possible. If such graphs are not possible explain why 22 3 34 1 22 3 4 22 3 4 5 4. a) Show all possible connected sub graphs of the following graph. How many of thenm are there. b) Show all possible non isomorphic connected sub graphs of the following graph. How many of them are there 3. a) Find simple connected graphs with the following vertex degrees if possible. If suckh graphs are not possible explain why. 22 22 3 3 3 3 4 44 1 2 3 3 4 b) Find simple connected graphs with the following vertex degrees if possible. If such graphs are not possible explain why 22 3 34 1 22 3 4 22 3 4 5 4. a) Show all possible connected sub graphs of the following graph. How many of thenm are there. b) Show all possible non isomorphic connected sub graphs of the following graph. How many of them are there