C21221212121211331322132313132313331313231333131132132322121
  >>
   C2122121212121133132213231313231333131323133313113213232212
  <<
   C21221212121211331322132313132313331313231333131132132322123
  >>
 
 
 C21221212121211331322132313132313331313231333131132132322122
  >>