from collections import *
k = int(input())

q0,q1,q2,q3 = deque(),deque(),deque(),deque()

q0.append("A")
q0.append("E")
q1.append("B")
q2.append("C")
q3.append("D")

for i in range(k):
    if i%4 == 0:
        now = q0.popleft()
        q1.append(now)
    elif i%4 == 1:
        now = q1.popleft()
        q2.append(now)
    elif i%4 == 2:
        now = q2.popleft()
        q3.append(now)
    else:
        now = q3.popleft()
        q0.append(now)
        
ans1 = "".join(q0)
ans2 = "".join(q1)
ans3 = "".join(q2)
ans4 = "".join(q3)
print(ans1)
print(ans2)
print(ans3)
print(ans4)