//pcountSize = 0, they are from a branch that is entirely from a group the user doesn't want
//pcountSize = 2, not unique to one group
//pcountSize = 1, unique to one group
//pcountSize = 0, they are from a branch that is entirely from a group the user doesn't want
//pcountSize = 2, not unique to one group
//pcountSize = 1, unique to one group