C1111233133313231133133313331333133313231121333133313331322233232311   >>    C111123313331323113313331333133313331323112133313331333132223323231   <<    C1111233133313231133133313331333133313231121333133313331322233232313   >>      C1111233133313231133133313331333133313231121333133313331322233232312   >>