22 、A triangle with a perimeter of 36 has three sides that are all composite numbers, then the number of such triangles is. $\qquad$
【Analysis】The longest side should be between 12 and 17
Since it is required that all three sides are composite numbers
I. The longest side is 16
In this case, the sum of the other two sides is 20, which can be (16, 4) (14, 6) (12, 8) (10, 10), a total of 4 kinds
II. The longest side is 15
In this case, the sum of the other two sides is 21, which can be (15, 6) (12, 9), a total of 2 kinds
III. The longest side is 14
In this case, the sum of the other two sides is 22, which can be (14, 8) (12, 10), a total of 2 kinds
IV. The longest side is 12
In this case, the sum of the other two sides is 24, which can be (12, 12), a total of 1 kind
In summary, there are 9 kinds.