I have three arrays:

```
a=[1,2,3];
b=[4,5,6];
c=[7,8,9];
```

and I want to get all possible combinations across the three arrays with three elements, the first from `a`

, the second from `b`

, and the third from `c`

. That is:

```
result = [[1,4,7];[1,4,8];[1,4,9];[1,5,7];[1,5,8],...]
```

Is there a quick way to do, maybe using `Combinatorics.jl`

` or one of the other existing packages?

Thank you!