C1111233133313231133133313331333133311221123121111331333133313331313213131   >>    C111123313331323113313331333133313331122112312111133133313331333131321313   <<    C1111233133313231133133313331333133311221123121111331333133313331313213133   >>      C1111233133313231133133313331333133311221123121111331333133313331313213132   >>