C3121113331313231323132313232321323132322331313232211331
  >>
   C312111333131323132313231323232132313232233131323221133
  <<
   C3121113331313231323132313232321323132322331313232211333
  >>
 
 
 C3121113331313231323132313232321323132322331313232211332
  >>