!!! note
    Specified pairwise interactions are not guaranteed to appear in a model's output. Only the interactions that add signal to a model according to the algorithm will be featured in the output. For example, if you specify an interaction group of features A, B, and C, then AxB, BxC, and AxC are the interactions considered during model training. If only AxB adds signal to the model, then only AxB is included in the model's output (excluding BxC and AxC).
