How to format a Gmail filter that contains 2, or more, two-argument statements

Question

If I want to maintain one Gmail filter for multiple "2 or more argument" statements how is this formatted?

Something like this...

<to:[email protected] AND list:(<123456.xt.local>)> OR <to:[email protected] AND list:(<7891011.xt.local>)>

1. For each statement, that contains two arguments, we need an "AND" which means brackets() ... correct?

2. Between each construct we need an "OR" which means curly braces {} ... correct?

Shouldn't this statement work?

{(to:[email protected] list:(<123456.xt.local>))} {(to:[email protected] list:(<7891011.xt.local>))}

I am getting a warning that my filter contains characters that cause issues.

Filter searches that contain special characters like [ ], ( ), &, #, *, !, %, $, £, may have unexpected results and are not recommended. Do you still wish to continue to the next step?

I understand this would have to be in the "has" field.

Oh! Thanks for the tips.