C12121223131323223313132322331323132313231333132313233313231322331   >>    C1212122313132322331313232233132313231323133313231323331323132233   <<    C12121223131323223313132322331323132313231333132313233313231322333   >>      C12121223131323223313132322331323132313231333132313233313231322332   >>