Problem 3 A total of 36 members of a club play tennis, 28 play squash, and 18 play badminton. Furthermore, 22 of the members play both tennis and squash, 12 play both tennis and badminton, 9 play both squash and badminton, and 4 play all three sports. If the total number of members of the club is 50, how many members of this club do not play any of the three sports?

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