CAML Query for multiple branches of "And-Or-In" statements - sharepoint

Question

I'm using CAML Query to pull items from a list.
I tried re-arranging the structure of my query, and still would not return anything. I try not to use CAMLQuery Builder (doing it manually).
<Query>
<Where>
<And>
<Contains>
<FieldRef Name="Field1"/><Value Type="Text">A</Value>
</Contains>
<And>
<In>
<FieldRef Name="Field2"/><Values><Value Type="Text">B</Value></Values>
</In>
<Or>
<In>
<FieldRef Name="Field3"/><Values><Value Type="Text">C</Value></Values>
</In>
<In>
<FieldRef Name="Field4"/><Values><Value Type="Text">D</Value></Values>
</In>
</Or>
</And>
</And>
</Where>
</Query>
Note: I have seen questions that may seem as a duplicate of this, but have never seen a question go as deep as this level of branching. CAML Query seems to be particular in where you put your closing tags.
Did I nest my "And" and "Or" incorrectly? What could be wrong/missing in this query?

Answer 1

While your CAML appears valid to me (without actual <FieldRef> and <Value> elements, I can't specifically test your field names, types & values), I tend to write my CAML in a more "balanced" fashion, as such:
<Query>
<Where>
<And>
<And>
<Contains>A</Contains>
<In>B</In>
</And>
<Or>
<In>C</In>
<In>D</In>
</Or>
</And>
</Where>
</Query>
According to the spec, both your posted version & my answer here would net the same result, but I would test to confirm. If the above doesn't work, brevity aside, I'd suggest posting your full CAML so that we can recreate your List with the same field names & types and test data with matching values.