D233123313113313132313231311112331323221323223313232233133112312221   >>    D23312331311331313231323131111233132322132322331323223313311231222   <<    D233123313113313132313231311112331323221323223313232233133112312223   >>      D233123313113313132313231311112331323221323223313232233133112312222   >>