Sorting lists prioritizing letters before numbers

[Ratherfastmofo]

Hi guys,

I'm a very new coder so your help means a lot.

I'm trying to sort a list which unsorted might look like this:

001 123
001 Beta 123
402 123
403 123
402 CxR 123
192 UqS 123
001 Alpha 123
309 223
001 038
007 Bond 123

I want to sort this list so that the first three characters are sorted by number, but after that letters are prioritized in sorting. Thus i want the code to return the list sorted like so:

001 Alpha 123
001 Beta 123
001 038
001 123
007 Bond 123
192 UqS 123
309 223
402 CxR 123
402 123
403 123

How do i sort a list like so?

Thanks, guys.