C3121113331313231323132333131313231323131323223313233313233313232313211
  >>
   C312111333131323132313233313131323132313132322331323331323331323231321
  <<
   C3121113331313231323132333131313231323131323223313233313233313232313213
  >>
 
 
 C3121113331313231323132333131313231323131323223313233313233313232313212
  >>