Fill in the Blanks
3, __, 9, __, 15
6, 12
3, 6, 9, __
12
12, 9, 6, __
3
3, 6, 9, 12, __, 18
15
18, __, 24, __, 30
21, 27
15, 18, 21, __
24
24, 21, 18, __
15
64, 67, __, 73, 76, 79
70
33, __, 39, __, 45
36, 42
27, 30, 33, __
36
36, 33, 30, __
27
40, __, 46, 49, 52, 55
43
48, __, 54, __, 60
51, 57
39, 42, 45, __
48
48, 45, 42, __
39
22, 25, 28, __, 34, 37
31
63, __, 69, __, 75
66, 72
51, 54, 57, __
60
60, 57, 54, __
51
119, 122, __, 128, 131, 134
125