I have a sheet with the following data:

```
A B
1 Raisa A
2 Mellissa A
3 Emma A
4 Slyvia B
5 Salina C
6 Beula A
7 Apolonia F
```

And I would like to list all people with A's, like this:

```
Raisa
Mellissa
Emma
Beula
```

I currently use the following formula:

```
=INDEX(A1:A7;MATCH("A";B1:B7;0))
```

Which has the output

```
Raisa
```

How do I alter the formula so the following cells each show the 'next match'?