How to extract letters from a string?

Question

Regular Expressions

I have a sample string:
string str = "0.005 кв.м";
I need to get "sq.m" from it, but I don't understand how to do it in C#. There are no problems with the numbers, they can be obtained from the sample with such a template:

string pattern = @"\b((\d+\,\d+)|(\d+\.\d+)|(\d+))";

Tell me how to do it with letters, with [:alpha:] something doesn’t work for me.

Answer 1

\S+$
https://regex101.com/r/fK9kF5/1