You have the following outcomes:

4;5;6

4;6;6

4;6;5

5;5;6

5;4;6

5;6;4

5;6;5

5;5;5

6;4;5

6;5;4

6;5;5

6;6;6

Are these all the possibilities? Just double check them.

The total number of possibilities you can throw is = 216

And I've found 12 possibilities there.

Although maybe something like 5;5;5 should be counted for all the possibilities in which the dice can be arranged? Which will be 6 different possibilities if I'm not mistaken.

EDIT: If this is wrong, forgive me. My brain is fried