...................................................................                                           .................. .1/........

                                                                                             F ?

F                                                                  F                                  F                                                                                    F F

    .................................................................................................1. F        F                                                        F

    .................................................................................................. 2.            F

    .................................................................................................... 3.

    ......................................................................................................4.             F

    ......................................................................................................5. F                   F                                   F

    ......................................................................................................6.

    ......................................................................................................7.                                                     F

    ......................................................................................................8.

    ......................................................................................................9. F

    .....................................................................................................10.

    ......................................................................................................11.                                            F

    ......................................................................................................12.                                        F

    ......................................................................................................13.

    ......................................................................................................14.                                    F

    ......................................................................................................15.                F

    ...................................................................................................16.                                                   F                F F

    .......................................................................................................17.                               F

    .......................................................................................................18.

                                                                                                      .19. F                             F

    ......................................................................................................20.                        F

B

  • 1.
    ................................................................... .................. .1/........ F ? F F F F F .................................................................................................1. F F F .................................................................................................. 2. F .................................................................................................... 3. ......................................................................................................4. F ......................................................................................................5. F F F ......................................................................................................6. ......................................................................................................7. F ......................................................................................................8. ......................................................................................................9. F .....................................................................................................10. ......................................................................................................11. F ......................................................................................................12. F ......................................................................................................13. ......................................................................................................14. F ......................................................................................................15. F ...................................................................................................16. F F F .......................................................................................................17. F .......................................................................................................18. .19. F F ......................................................................................................20. F