pub fn update_scores_hashed_cols<T, U>(
    scores_hashed_cols: &mut ScoreMatsHashedPoss<U>,
    col_pair_left: &PosPair<U>,
    alignfold_pair: &AlignfoldPair<'_, T, U>,
    scores: &SparseProbMat<U>,
    match_scores: &SparseProbMat<U>
)where
    T: HashIndex,
    U: HashIndex,