import itertools

alphabet = "ABX"

ar = itertools.product(alphabet, repeat=6) #Раз­ме­ще­ние с по­вто­ре­ни­ем

arl = []

for i in ar:

arl.append(list(i))

count = 0

for e in arl:

if e.count('X') == 1:

count += 1

print(count)

count = 0

abc = 'ABX'

for x1 in abc:

for x2 in abc:

for x3 in abc:

for x4 in abc:

for x5 in abc:

for x6 in abc:

slovo = x1+x2+x3+x4+x5+x6

if slovo.count('X') == 1:

count += 1

print(count)