import itertools

otv = []

for i in range(2,14):

combs = [''.join(pair) for pair in itertools.combinations('123456789ABC', i)]

otv.append(len(combs))

print(sum(otv))

def quantity(previous, length):

return 12-previous if length==1 else sum(quantity(i,length-1) for i in range(previous+1,13))

print(sum(quantity(0,length) for length in range(2,13)))