E.g. double-clicking directory rectory R will give you the directories inside R correspond to the first two letters of user names.
category
appointment
enthusiasm
newly
innocence
President's
meetings
diplomatic
select
Southeast
specified
fraction
municipal
protest
gathering
excuse
exec
execute
execution
executioner
executive
executives
fabricate
fabrication
fabulous
facade
face
faceless
face-lift
face-saving
facet
facetious
facetiously
face value
facial
facile
facilitate
facilities
facility
exclusive
Brooklyn
Irish
civic
encounter
frightened
frightening
frighteningly
frightful
SIDEWALK
scared
melody
Tales
Cromwell
persuaded
secs
college
boys
saw
positioned
users
rectory
two