C1111233133313231133133313331333133311221123121111113313231323321   >>    C111123313331323113313331333133313331122112312111111331323132332   <<    C1111233133313231133133313331333133311221123121111113313231323323   >>      C1111233133313231133133313331333133311221123121111113313231323322   >>