Language of the Others

One - "Pilot, Part 2", "White Rabbit", "Confidence Man", "Homecoming",
and "Deus Ex Machina"
Two - "Man of Science, Man of Faith", "everybody Hates Hugo", "The 23rd Psalm", "?", and "Live Together, Die Alone"
Three - "Trisha Tanaka is Dead", "The Man from Talahassee", "The Brig",
"The Man Behind the Curtain", and "Through the Looking Glass"
Four - "The Economist", "The Constant", "Meet Kevin Johnson", "Cabin Fever",
and "There's No Place Like Home, Parts 2 & 3"
Five - "316", "The Life and Death of Jeremy Benthem", "LaFleur", "Dead is Dead",
and "The Incident, Parts 1 & 2"
Six - ???

John Locke
Benjamin Linus
Sawyer/LaFleur
Juliet
Hugo
Charlie
Sayid
Desmond
Miles
Jack
...and Vincent