import re
import argparse

parser = argparse.ArgumentParser()
parser.add_argument("filename", help="the file from which to take data")
args = parser.parse_args()

with open(args.filename, "r") as f: contents = f.read()

buffer = contents[:4]
for (i, s) in enumerate(contents[3:]):
	buffer = buffer[1:] + s

	print(buffer)
	if len(set(buffer)) == 4:
		print(i+4)
		break

buffer = contents[:14]
for (i, s) in enumerate(contents[13:]):
	buffer = buffer[1:] + s

	print(buffer)
	if len(set(buffer)) == 14:
		print(i+14)
		break