C123211131133132233131323132313233313233313132313133313231123311   >>    C12321113113313223313132313231323331323331313231313331323112331   <<    C123211131133132233131323132313233313233313132313133313231123313   >>      C123211131133132233131323132313233313233313132313133313231123312   >>