q0 = ["A","E"]
q1 = ["B"]
q2 = ["C"]
q3 = ["D"]
k = int(input())

for i in range(k):
    if i%4 ==0:
        q1.append(q0.pop(0))
    elif i%4 ==1:
        q2.append(q1.pop(0))
    elif i%4 ==2:
        q3.append(q2.pop(0))
    else:
        q0.append(q3.pop(0))

print(" ".join(q0))
print(" ".join(q1))
print(" ".join(q2))
print(" ".join(q3))