[mothered]

It doesn't look right, I haven't come across anything like that.

As an example, In MySQL, the following returns all values that "start" with the chars B & T:

Code:

'^[BT]'

And If It's hyphenated, It will return all values that "start between" the chars B & T (Inclusive of B & T):

Code:

'^[B-T]'

There's a few other variants, but these are the basics. @Inori has explained your question well.