s = read_line.gsub(/^ｗ+/, "")
match = s.scan(/ｗ+/)
range = match.map { |i| {i.begin.not_nil!, i.end.not_nil!} }.unshift({0, 0})
len = range.max_of { |r| r[1] - r[0] }
puts range.each_with_index.to_a.select { |(r, i)|
  r[1] - r[0] == len
}.join('\n') { |(r, i)|
  s[range[i - 1][1]...range[i][0]]
}