C121212231313232233131323223313231323131111223132313231323221321   >>    C12121223131323223313132322331323132313111122313231323132322132   <<    C121212231313232233131323223313231323131111223132313231323221323   >>      C121212231313232233131323223313231323131111223132313231323221322   >>