finish
finished
finishing
finite
finite-horizon
finite-source
fink
fire
firm
firmness
  first
first-class
first-come-first
first-generation
first-grade
first-in-first-out
first-in-last-out
first-line
first-order
first-priority
first-rate

    first - in - last - out

    прибыл первым - обслужен последним, обслуживание в обратном порядке