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HCLTech is Hiring !!

HCLTech is one of the worldโ€™s fastest growing large tech companies, leading the way in digital, engineering and cloud across the world. We supercharge progress for the biggest brands on the planet and are fully committed to help all our people find their spark. So, if you think youโ€™re ready to join us and supercharge everything your career could be here is your chance:-
 
HCLTech is looking for experienced professionals with 6 to 18 months of (relevant project experience with an organization in Embedded system and C domain)
 
Job Title: Software Engineer/Software Developer
Education Background: B.E./B.Tech (EEE, ECE) Only
Graduation Batch : 2021-2023
CTC Offered โ€“ 4.6 LPA to 6 LPA
Location: PAN India

https://freshers.hcltech.com/?utm_source=FresherPlus&utm_medium=EmbeddedSkills&utm_campaign=RK
from itertools import product

N, M = map(int, input().split())
strings = [input() for _ in range(N)]

combinations = product(*strings)
unique_combinations = set(combinations)

for combo in unique_combinations:
    print(''.join(combo))