C2122121212132322331313132313232233132322331322223313231322132313233311   >>    C212212121213232233131313231323223313232233132222331323132213231323331   <<    C2122121212132322331313132313232233132322331322223313231322132313233313   >>      C2122121212132322331313132313232233132322331322223313231322132313233312   >>