14

masti = '♥♦♠♣'
number = ['6', '7', '8', '9', '10', 'В', 'Д', 'К', 'Т']
# Можно ли решить задачу в одну строку?

print(*tuple({n + m for n in number for m in masti})[:6])


# long way)))

allcards = []
for n in number:
    for m in masti:
        allcards.append(n + m)
print(allcards)

allcards_set = set(allcards)
allcards_tup = tuple(allcards_set)
print(*allcards_tup[:6])