C21221212121211331313233313131133132333132313223313231333132112323211
  >>
   C2122121212121133131323331313113313233313231322331323133313211232321
  <<
   C21221212121211331313233313131133132333132313223313231333132112323213
  >>
 
 
 C21221212121211331313233313131133132333132313223313231333132112323212
  >>