# No.1994 Confusing Name import sys, time, random, string import numpy as np LEN = 10 #sys.stdin = open(r"C:\Users\takah\Downloads\7564-testcase\test_in\3_hand01.txt") N = int(input()) S = [input() for i in range(N)] nn = np.full((N), 0) for i in range(LEN): T = [s[:i]+s[i+1:] if i