How to select docks with a certain field length of the list type?

Question

elasticsearch

there is a field in the dock "license"
It has different values ​​with different length:
For example:
["A1", "B3", "C7"]
["A1, "B3"]
['B3", "C7"]
How to select records with a specific list length for example with 2 values ​​only: ["A1, "B3"], ['B3", "C7"]
Or with specific values ​​only ["A1, "B3"]?