from collections import deque
q0=deque()
q0.append('A')
q0.append('E')
q1=deque()
q1.append('B')
q2=deque()
q2.append('C')
q3=deque()
q3.append('D')
k=int(input())
for i in range(k):
    if i%4==0:
        out=q0.popleft()
        q1.append(out)
    elif i%4==1:
        out=q1.popleft()
        q2.append(out)
    elif i%4==2:
        out=q2.popleft()
        q3.append(out)
    else:
        out=q3.popleft()
        q0.append(out)
ans0=''
while q0:
    out=q0.popleft()
    ans0+=out
print(ans0)
ans1=''
while q1:
    out=q1.popleft()
    ans1+=out
print(ans1)
ans2=''
while q2:
    out=q2.popleft()
    ans2+=out
print(ans2)
ans3=''
while q3:
    out=q3.popleft()
    ans3+=out
print(ans3)