string = "(CH3)2CHCH(CH3)CH2CH3"
print(string.index("CH2"))

string2 = "(CH3CH2CH3)"
print(string2[1:len(string2) - 1])

print(string[9:6])

array = ["bb", "ae", "jj", "zw", "ga", "ja"]
print(sorted(array))

