C21221212121323223313131323132322331323331323121133132313331
  >>
   C2122121212132322331313132313232233132333132312113313231333
  <<
   C21221212121323223313131323132322331323331323121133132313333
  >>
 
 
 C21221212121323223313131323132322331323331323121133132313332
  >>