D12121212213231323132323323132322331323132333133313132322123111   >>    D1212121221323132313232332313232233132313233313331313232212311   <<    D12121212213231323132323323132322331323132333133313132322123113   >>      D12121212213231323132323323132322331323132333133313132322123112   >>