import re

input = "cqjxjnds"

def match(pattern, string):
        return re.search(pattern, string) != None

def rule1(input):
	matched = 0
	last = '-'

	for c in input:
		if ord(c) == ord(last) + 1:
			matched += 1
			if matched == 3:
				return True
		else:
			matched = 1

		last = c


	return False
	
	
def increment(input):
	res = ""
	carry = 1 

	for c in  reversed(input):
		if carry != 0:
			if c=='z':
				c = chr(ord('a'))
				carry = carry 
			else:
				c = chr(ord(c)+carry)
				carry =  0
		res = c + res 

	return res


for i in range(10):
	while not (rule1(input) and match(r"(.)\1.*(.)\2", input) and not match(r"i|o|l", input)):
		input = increment(input)
	print(input)
	input = increment(input)