import math

def isSame(s1,s2):
	for s in s2:
		s1=s1.replace(s,"")
	return s1 == ""

inputs = []
line = sys.stdin.readline()
while(line):
    line = sys.stdin.readline()
	inputs.append(line)
unique=[]
counter=0
for i in inputs:
	if counter==0:
		counter=int(i)+1
		if(len(unique)!=0):
			print(len(unique))
			unique = []
	else:
		if(len(unique)==0):
			unique.append(i)
		isu = True
		for u in unique:
			if(isSame(u,i)):
				isu = False
				break
		if(isu):
			unique.append(i)
			
	counter-=1
print(len(unique))