from itertools import product

count = 0

for i in product('0123456789abcde', repeat=4):

if i[0] != '0':

if i[0] != i[1] and i[1] != i[2] and i[2] != i[3]:

if i.count('8') == 1:

count += 1

print(count)

s = '0123456789abcde'

k = 0

for x1 in s:

for x2 in s:

for x3 in s:

for x4 in s:

x = x1 + x2 + x3 +x4

if x[0] != '0' and x.count('8') == 1:

if x[0] != x[1] and x[1] != x[2] and x[2] != x[3]:

k += 1

print(k)

from itertools import product

count = 0

for i in product('0123456789abcdef', repeat=4):

if i[0] != '0':

if i[0] != i[1] and i[1] != i[2] and i[2] != i[3]:

if i.count('3') == 1:

count += 1

print(count)