C21221212121211331313233313131133132333132313223313113313231333132333132321121
  >>
   C2122121212121133131323331313113313233313231322331311331323133313233313232112
  <<
   C21221212121211331313233313131133132333132313223313113313231333132333132321123
  >>
 
 
 C21221212121211331313233313131133132333132313223313113313231333132333132321122
  >>