#dry_run__dryrun__rehearsal__run_through__runthrough  a practice session in preparation for a public performance (as of a play or speech or concert); "he missed too many rehearsals"; "a rehearsal will be held the day before the wedding"
  supertype:  exercise__practice_session__practice__drill  systematic training by multiple repetitions; "practice makes perfect"
  subtype:  dress_rehearsal__dressrehearsal  a full rehearsal shortly before the first performance

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