
l = ["Bob", "Alex", "John"]
t = ("Bob", "Alex", "John")
s = {"Bob" "Alex", "John"}

l[2] = "Alex"
l.append("Loki")
print(l)

s.add("Bob")
s.add("LOki")
print(s)

a = s
s.add("jacky")
print(s.intersection(a))
