C1111233133313231133133313331333133311221123121111331123313111131   >>    C111123313331323113313331333133313331122112312111133112331311113   <<    C1111233133313231133133313331333133311221123121111331123313111133   >>      C1111233133313231133133313331333133311221123121111331123313111132   >>