classmates = ['Anna','Bob','Coco']

print (classmates)

print(classmates[0])

print(classmates[1])

print(classmates[2])

print(classmates[-1])

classmates.append('Dan')

print(classmates)

classmates.insert(1,"Elle")

print(classmates)

classmates[0] = 'Ann'

print(classmates)

print(len(classmates))