from collections import deque
n = int(input())

d = deque()
for _ in range(n):
    text = input().rstrip().split()
    if len(text) > 1:
        opr, val = text
        getattr(d, opr)(int(val))
    else:
        getattr(d, text[0])()
print(*d)

from collections import deque

N = int(input())
d = deque()

for _ in range(N):
    commands = list(map(str,input().strip().split()))
    
    if commands[0] == 'append':
        d.append(int(commands[1]))
    elif commands[0] == 'appendleft':
        d.appendleft(int(commands[1]))
    elif commands[0] == 'extend':
        d.extend(int(commands[1]))
    elif commands[0] == 'extendleft':
        d.extendleft(int(commands[1]))
    elif commands[0] == 'pop':
        d.pop()
    elif commands[0] == 'popleft':
        d.popleft()
        

print(" ".join(map(str, list(d))))

d=deque()
for _ in range(int(input())):
    l= input().split()
    (getattr(d, l[0])())if len(l)==1 else (getattr(d, l[0])(l[1]))
print(' '.join(d))