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s = "string in python"

s1 = s.capitalize()
print(s1)

s2 = s.title()
print(s2)

s = "This Is Test"

s3 = s.lower()
print(s3)

s4 = s.upper()
print(s4)

s5 = s.swapcase()
print(s5)

s6 = s.replace("Is", "Was")
print(s6)

print(s)