• 6 + 5 = 11            3 x 4 = 12
    7 + 4 = 11            3 x 6 = 18
    7 + 5 = 12            3 x 7 = 21
    7 + 6 = 13            3 x 8 = 24
    8 + 3 = 11            3 x 9 = 27
    8 + 4 = 12            4 x 6 = 24
    8 + 5 = 13            4 x 7 = 28
    8 + 6 = 14            4 x 8 = 32
    8 + 7 = 15            4 x 9 = 36
    9 + 3 = 12            6 x 7 = 42
    9 + 4 = 13            6 x 8 = 48
    9 + 5 = 14            6 x 9 = 54
    9 + 6 = 15            7 x 8 = 56
    9 + 7 = 16            9 x 7 = 63
    9 + 8 = 17            9 x 8 = 72