C21221212121211331313233313131133132333132313223313113313231333132321321
  >>
   C2122121212121133131323331313113313233313231322331311331323133313232132
  <<
   C21221212121211331313233313131133132333132313223313113313231333132321323
  >>
 
 
 C21221212121211331313233313131133132333132313223313113313231333132321322
  >>