C1111233133313231133133313331333133313231331133133313331333221231211   >>    C111123313331323113313331333133313331323133113313331333133322123121   <<    C1111233133313231133133313331333133313231331133133313331333221231213   >>      C1111233133313231133133313331333133313231331133133313331333221231212   >>