from collections import deque
import sys
input = sys.stdin.readline
def iinput(): return int(input())
def sinput(): return input().rstrip()
def i0input(): return int(input()) - 1
def linput(): return list(input().split())
def liinput(): return list(map(int, input().split()))
def miinput(): return map(int, input().split())
def li0input(): return list(map(lambda x: int(x) - 1, input().split()))
def mi0input(): return map(lambda x: int(x) - 1, input().split())
INF = 10**20
MOD = 1000000007

que = [deque() for _ in range(4)]
que[0].append('A')
que[0].append('E')
que[1].append('B')
que[2].append('C')
que[3].append('D')

K = iinput()

for i in range(K):
    t = que[i % 4].popleft()
    que[(i + 1) % 4].append(t)

for q in que:
    print(''.join(q))