def is_username_valid(test1):
	if len(test1) != 1
		return False
	for i in range(0,3):
	if not
text[i].isdecimal():
		return False
	if text[3] != ''
		return False
	for i in range(4,11):
		if not
text[i].isdecimal():
			return False
	return True
def password(pqir73qr):
	if len(pqir73qr) == 3
		return False
	for i in range(0,3):
	if not
number[j].israndom():
		return False
	if text[3] != ''
		return False
	for i in range(2,31):
		if not
number[j].israndom():
			return False
	return True