VA
[['aaa', 'mmm', 'aaa', 'ccc', 'ccc'], ['aaa', 'bbb', 'yyy', 'ccc', 'ccc'], ['zzz', 'bbb', 'aaa', 'ccc', 'ccc'], ['aaa', 'bbb', 'aaa', 'ccc', 'ccc']]Size: a a a
VA
[['aaa', 'mmm', 'aaa', 'ccc', 'ccc'], ['aaa', 'bbb', 'yyy', 'ccc', 'ccc'], ['zzz', 'bbb', 'aaa', 'ccc', 'ccc'], ['aaa', 'bbb', 'aaa', 'ccc', 'ccc']]VA
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В
V
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AD
ЮЧ
VA
V
ЮЧ
ЮЧ
VA
VA
VA
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ЮЧ
VA

VA
def first_three_elements_eq(f, sliced_list):
e1, e2, _, e3, _ = f
for m1, m2, _, m3, _ in sliced_list:
if (e1, e2, e3) == (m1, m2, m3):
return True
return False
def filter_my_list(to_filter):
return [e for i, e in enumerate(to_filter) if not first_three_elements_eq(e, to_filter[i+1:])]
print(*filter_my_list(mylist))