lesson1 = [48, 36, 12]
lesson2 = [28, 'нет', 32]
lesson3 = [42, 36, 24]
lesson4 = ['нет', 'нет', 'нет']
print(lesson1)
print(lesson2)
print(lesson3)
print(lesson4)
lesson1 = [48, 36, 12]
lesson2 = [28, 'нет', 32]
lesson3 = [42, 36, 24]
lesson4 = ['нет', 'нет', 'нет']
print(lesson1)
print(lesson2)
print(lesson3)
print(lesson4)