D23312331311331311331322233231323132313232233132323223313221121   >>    D2331233131133131133132223323132313231323223313232322331322112   <<    D23312331311331311331322233231323132313232233132323223313221123   >>      D23312331311331311331322233231323132313232233132323223313221122   >>