how do I match the next two characters?

[ToddAndMargo]

Hi All,

I want to match the next two character (don't care what
they are) in the following

I will use ?? for the next two character, but that doesn't work
$x ~~ m/.*?(sd??).*/;

I want $0 to include the "sd" and the next two characters, whatever
they are.


Many thanks,
-T