from collections import defaultdict import sys input = sys.stdin.readline N = int(input()) S = [input().rstrip() for _ in range(N)] cnt = defaultdict(int) for s in S: for i in range(len(s)): t = s[:i] + '?' + s[i+1:] cnt[t] += 1 for s in S: ans = 0 for i in range(len(s)): t = s[:i] + '?' + s[i+1:] ans += cnt[t] ans -= len(s) print(ans)