D121212122132313231323233231313231323323132322331323223313221221   >>    D12121212213231323132323323131323132332313232233132322331322122   <<    D121212122132313231323233231313231323323132322331323223313221223   >>      D121212122132313231323233231313231323323132322331323223313221222   >>