D1212132333131113231323221323123231313231323223313231323223313233221   >>    D121213233313111323132322132312323131323132322331323132322331323322   <<    D1212132333131113231323221323123231313231323223313231323223313233223   >>      D1212132333131113231323221323123231313231323223313231323223313233222   >>