C1111233133313231133133313331333133311221123121111331123313113313331333211   >>    C111123313331323113313331333133313331122112312111133112331311331333133321   <<    C1111233133313231133133313331333133311221123121111331123313113313331333213   >>      C1111233133313231133133313331333133311221123121111331123313113313331333212   >>