C1111233133313231133133313331333133313231323331323133313132311221123132311   >>    C111123313331323113313331333133313331323132333132313331313231122112313231   <<    C1111233133313231133133313331333133313231323331323133313132311221123132313   >>      C1111233133313231133133313331333133313231323331323133313132311221123132312   >>