import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = 18446744073709551615
# inf = 4294967295
# md = 10**9+7
md = 998244353

from collections import deque

k = II()

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

for i in range(k):
    i = i%4
    j = (i+1)%4
    c = qq[i].popleft()
    qq[j].append(c)

for i in range(4):
    ans = ""
    while qq[i]:
        ans += qq[i].popleft()
    print(ans)