C212212121212113313221323131323131323132322331323132233132313232211233132211
  >>
   C21221212121211331322132313132313132313232233132313223313231323221123313221
  <<
   C212212121212113313221323131323131323132322331323132233132313232211233132213
  >>
 
 
 C212212121212113313221323131323131323132322331323132233132313232211233132212
  >>