import sys
import math

def isSame(s1,s2):
	for s in s2:
		s1=s1.replace(s,"")
	return s1 == ""
def getUni(s):
	st = ""
	for c in "123456789":
		if(s.find(c)!=-1):
			st += c
	return st
inputs = []
line = sys.stdin.readline()
inputs.append(line.replace("\n",""))
while(line):
	line = sys.stdin.readline()
	if line=="\n":
		break
	inputs.append(line.replace("\n",""))
unique=[]
counter=0
for i in inputs:
	it = getUni(i)
	if counter==0:
		counter=int(i)+1
		if(len(unique)!=0):
			print(len(unique))
			unique = []
	else:
		if(len(unique)==0):
			unique.append(it)
		isu = True
		for u in unique:
			if(u==it):
				isu = False
				break
		if(isu):
			unique.append(it)
	counter-=1
print(len(unique))
sys.exit(0)