Say I have the following `numpy` array:

```
a = np.array([1,5,5,2,3,6,5,2,5,5,5])

```

I'm trying to come up with a `numpy` solution to count the amount of times a given value appears consecutively. So, for example for number `5` I'd like to get:

```
array([2,1,3])

```

As it appears consecutively 3 times in the array, with the specified amount of repetitions on each time.