s="""one
two
three
four
five
six
seven
eight
nine"""
t="""twenty
thirty
fourty
fifty
sixty
seventy
eighty
ninety"""
print"zero\n%s\nten\neleven\ntwelve"%s+t[6:].replace("ty","teen")
for i in t.replace("u","").split("\n"):
	print i
	for j in s.split("\n"):print i+" "+j
print"one hundred"