5+6=11          6+6=12        7+6=13      7+7=14           7+8=15         8+8=16                                                                                                         8+9=17                                                                                                  9+9=18

7+4=11          7+5=12        8+5=13      8+6=14           9+6=15       9+7=16

8+3=11          8+4=12        9+4=13      9+5=14

9+2=11          9+3=12