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+8        +8      +8       +8      +8       +8       +8      +8       +8

                      8



                         -8        -8      -8       -8      -8       -8       -8      -8       -8

                     80


















                                                  8 x 1=                        8 x 10=



                                                  8 x 2=                        8 x 9=




                                                  8 x 3=                        8 x 8=



                                                  8 x 4=                        8 x 7=






                                                   8 x 5=                        8 x 6=




                                                   8 x 6=                        8 x 5=



                                                   8 x 7=                        8 x 4=





                                                  8 x 8=                        8 x 3=



                                                  8 x 9=                        8 x 2=




                                                  8 x 10=                       8 x 1=



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