I have the regular expression:

```
 ^[-\s]+|Not Specified$

```

I get a match on all of the following strings:

```
--
Not Specified
- - -                    eV
-270 - 1000                    deg C

```

but I want to get only on the first three.

I don't want to catch word like:

```
 MTF, Depth, Focus, Blur
sub-micron

```