import random

random.seed(None)

lowers = 'qwertyuiopasdfghjklzxcvbnm'
uppers = 'QWERTYUIOPASDFGHJKLZXCVBNM'
number = '0123456789'

length = 12

while True:
  uprspot = random.randint(0, length-1)
  numspot = uprspot

  while uprspot == numspot:
    numspot = random.randint(0, length-1)

  strgen = ""

  for i in range (0, length):

    if i == uprspot:
      strgen += random.choice(uppers)

    elif i == numspot:
      strgen += random.choice(number)

    else:
      strgen += random.choice(lowers)

  print(strgen)

from sympy.utilities.iterables import multiset_permutations
import os

contents = os.linesep.join(list(map(lambda b: "".join(b), list(multiset_permutations(['?d', '?u', '?l', '?l', '?l', '?l', '?l', '?l', '?l', '?l', '?l', '?l'])))))

file = open("scan.hcmask", "w")
file.write(contents)
file.close()