C2122121212132322331313132313232233132333132312113313231323233231311   >>    C212212121213232233131313231323223313233313231211331323132323323131   <<    C2122121212132322331313132313232233132333132312113313231323233231313   >>      C2122121212132322331313132313232233132333132312113313231323233231312   >>