C121212231313232233131323223313231323132313331323221323132312131   >>    C12121223131323223313132322331323132313231333132322132313231213   <<    C121212231313232233131323223313231323132313331323221323132312133   >>      C121212231313232233131323223313231323132313331323221323132312132   >>