D233123313113313132313231311112331323221323223313231323211121221   >>    D23312331311331313231323131111233132322132322331323132321112122   <<    D233123313113313132313231311112331323221323223313231323211121223   >>      D233123313113313132313231311112331323221323223313231323211121222   >>