C21221212121211331313233313131133132333132313223313231323233231221
  >>
   C2122121212121133131323331313113313233313231322331323132323323122
  <<
   C21221212121211331313233313131133132333132313223313231323233231223
  >>
 
 
 C21221212121211331313233313131133132333132313223313231323233231222
  >>