L = ['red', 'green', 'yellow']
print(L)
# Prints ['red', 'green', 'yellow']

L.append('blue')
print(L)
# Prints ['red', 'green', 'yellow', 'blue']

L = ['red', 'green', 'yellow']
L.insert(1, 'blue')
print(L)
# Prints ['red', 'blue', 'green', 'yellow']
