C212212121212113313223313133313221323133313231323132313232211
  >>
   C21221212121211331322331313331322132313331323132313231323221
  <<
   C212212121212113313223313133313221323133313231323132313232213
  >>
 
 
 C212212121212113313223313133313221323133313231323132313232212
  >>