str = "one two three four five six seven eight nine ten eleven!"
width = 15
words = str.split
pos = 0
line = ""
for word in words
    pos = pos + word.len + 1
    if pos <= width then
        line = line + word + " "
    else
        print line[:-1]
        line = word + " "
        pos = word.len
    end if
end for
print line[:-1]