C1111233133313231133133313331333133313223313133313113313231123311   >>    C111123313331323113313331333133313331322331313331311331323112331   <<    C1111233133313231133133313331333133313223313133313113313231123313   >>      C1111233133313231133133313331333133313223313133313113313231123312   >>