C11112331312111112111133133313331333133313112113313331333133313231313232231   >>    C1111233131211111211113313331333133313331311211331333133313331323131323223   <<    C11112331312111112111133133313331333133313112113313331333133313231313232233   >>      C11112331312111112111133133313331333133313112113313331333133313231313232232   >>