D23312331311331313231323131111233132322132322331323223313211221   >>    D2331233131133131323132313111123313232213232233132322331321122   <<    D23312331311331313231323131111233132322132322331323223313211223   >>      D23312331311331313231323131111233132322132322331323223313211222   >>