from math import gcd

def code(s):
    return ord(s)-ord("A")
def codeR(n):
    return chr(ord("A")+n)

ans = []
for i in range(1, 26):
    GCD = gcd(i, 26)
    for j in range(GCD):
        for k in range(26//GCD):
            if i == 1:
                ans.append(codeR(k)+codeR(k))
            ans.append(codeR((j+k*i)%26)+codeR((j+(k+1)*i)%26))

for a in ans:
    print(a)