C1111233133313231133133313331333133311221123121111331333132213131   >>    C111123313331323113313331333133313331122112312111133133313221313   <<    C1111233133313231133133313331333133311221123121111331333132213133   >>      C1111233133313231133133313331333133311221123121111331333132213132   >>