m=['','twenty','thirty','forty','fifty','sixty','seventy','eighty','ninety']
n=['',' one',' two',' three',' four',' five',' six',' seven',' eight',' nine']
o=['ten','eleven','twelve','thirteen','fourteen','fifteen','sixteen','seventeen','eighteen','nineteen']

print 'zero'
for j in range(1,10):
	print n[j][1:]
for j in range(10):
	print o[j]
for i in range(1,9):
	for j in range(10):
			print m[i]+n[j]
print 'one hundred'