The Keep Dancing Club has a membership of 80 members including 42 ladies and 38 men. Forty-four of the members are retired, while the other 36 members are not retired. The exercise routines for 58 of the members involve at least three exercise periods per week, but the other 22 members exercise less often. Twenty-four of the ladies are retired, and 30 of the ladies exercise at least three periods per week. Twenty-two of the retired ladies exercise at least three periods per week. Within the membership, how many of the retied men do not exercise at least three periods per week?

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