# Write a Python Library for Linked List 
 # importing module
import collections


# initialising a deque() of arbitary length
linked_lst = collections.deque()


# filling deque() with elements
linked_lst.append('first')
linked_lst.append('second')
linked_lst.append('third')


print("elements in the linked_list:")
print(linked_lst)


# adding element at an arbitary position
linked_lst.insert(1, 'fourth')


print("elements in the linked_list:")
print(linked_lst)


# deleting the last element
linked_lst.pop()


print("elements in the linked_list:")
print(linked_lst)


# removing a specific element
linked_lst.remove('fourth')


print("elements in the linked_list:")
print(linked_lst)