[/] a==a(directory)
[/a] missing<-b(directory)
[/a/b] missing<-c(directory)
[/a] l1->missing(directory)
[/] b->missing(directory)
[/b] l2->missing(directory)
[/b/l2] l1->missing(directory)
[/] missing<-d(directory)
[/d] missing<-lb(directory)
[/d/lb] missing<-c(directory)
Entries are different
total: 10, equal: 1, distinct: 0, only left: 4, only right: 5