sindarin_grammar1-7  Exercise 2: The Imperative
===============================================

  ped-    pedo!     speak!
  minna-  minno!    enter!    (final -a becomes -o)
  nor-    noro!     run!

  pedo mellon a minno
    pedo     speak! (imperative of ped-)
    mellon   friend
    a        and
    minno    enter! (imperative of minna-)

The sentence is attested (the Doors of Moria). Whether mellon should be
softened after pedo is an open question.