- 9

"N" "R"
"N" "D" ()
"N" "R" "N" "D" ( ) , 2 , , , , .

      -   10



      . . . 20 ...

      eoe/ooe ooee ypeeo epaa aeo a
      eoe/ooe ooee ypeeo epaa aeo a , . ...

      - 7
      "N" "D" () ...