C1111233133313231133133313331333133311221123121111133313113313231131321   >>    C111123313331323113313331333133313331122112312111113331311331323113132   <<    C1111233133313231133133313331333133311221123121111133313113313231131323   >>      C1111233133313231133133313331333133311221123121111133313113313231131322   >>