You might want to repeat the questions of exercise 1 for exercise3.xes, of which the content is shown below. No answers are provided for this exercise however.
1x Case1 A C E G 1x Case2 A E C G 1x Case3 B D F G 1x Case4 B F D G
Solutions
Solutions not provided since repeating the solution approaches of exercises 1 and 2 would provide you with the correct answers.