# dictionary of valid words
dict = Set{String}()

# read each word into the dictionary
open("/usr/share/dict/american-english") do file
        for line in eachline(file)
                push!(dict, line)
        end
end

# read from stdin, split on space, and compare to dict
for line in eachline(stdin)
        words = split(line, ' ')
        for word in words
                if in(word, dict) == false
                        println(word)
                end
        end
end