class Proc {
    public func doProc() {
        let text = readLine()!
        let inpt = text.map{ $0 }

        var pos = 0

        var ans = [Int:[String]]()
        for i in 0..<inpt.count {
            if i < pos {
                continue
            }
            if inpt[i] == "ｗ" {
                var nextStart = inpt.count
                var cnt = 0
                for j in i..<inpt.count {
                    if inpt[j] != "ｗ" {
                        nextStart = j
                        break
                    } else {
                        cnt += 1
                    }
                }

                if i == 0 {
                    pos = nextStart
                    continue
                }

                let word = String(text.prefix(i).suffix(i-pos))
                if ans[cnt] == nil {
                    ans[cnt] = [String]()
                }
                pos = nextStart
                ans[cnt]!.append(word)
            }
        }

        if let maxIdx = ans.keys.max() {
            ans[maxIdx]!.forEach {
                print($0)
            }
        }
    }
}

Proc().doProc()