[Hen Hanna]

using Microsoft-Word wildcard ( reg ex, regex, regular expression ),

a?b a??b a???b all seem to work fine.
How can I merge the 3 search strings into one?
It's apparently not a?{1,3}b


I've tried this on a document.
Searching for a?b gives me 5 hits.
Searching for a??b gives me 10 hits.
Searching for a???b gives me 10 hits.

But
Searching for a?{1,3}b gives me 300+ hits.

What's the correct search string for what I want to do
(to get the 25 hits) ?

Thanks. HH