C1212132133313223313133313113313123132313232213231323132311211321   >>    C121213213331322331313331311331312313231323221323132313231121132   <<    C1212132133313223313133313113313123132313232213231323132311211323   >>      C1212132133313223313133313113313123132313232213231323132311211322   >>