C1111233133313231133133313331333133313231121333133313133313221311   >>    C111123313331323113313331333133313331323112133313331313331322131   <<    C1111233133313231133133313331333133313231121333133313133313221313   >>      C1111233133313231133133313331333133313231121333133313133313221312   >>