You are given a list of scores for multiple students, represented as items, where $items[i] = [ID_i, score_i]$ indicates the ID of a student $(ID_i)$ and their score $(score_i)$. Your task is to compute the top five average scores for each student.

Return the result as an array of pairs, result, where $result[j] = [ID_j, topFiveAverage_j]$ ...