C1111233133313231133133313331333133313231121333133313121121132311   >>    C111123313331323113313331333133313331323112133313331312112113231   <<    C1111233133313231133133313331333133313231121333133313121121132313   >>      C1111233133313231133133313331333133313231121333133313121121132312   >>