import random
print("一行一巡")
text = ''
A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
for q in range(7):
    for qw in range(27):
        text = f'{text}{A.pop(random.randint(0, len(A)-1))}'
    text = f'{text}.{chr(10)}'
    A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
print(text)

print("三行一巡")
text = ''
A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
for q in range(7):
    for qw in range(3):
        for qwe in range(9):
            text = f'{text}{A.pop(random.randint(0, len(A)-1))}'
        text = f'{text}.{chr(10)}'
    A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
print(text)

print("三行三拍一巡")
text = ''
A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
g = ""
for q in range(7):
    g = A[random.randint(0, len(A)-1)]
    for qw in range(3):
        for qwe in range(3):
            for qwe in range(3):
                text = f'{text}{A.pop(random.randint(0, len(A)-1))}'
            text = f'{text}{g}'
        text = f'{text}.{chr(10)}'
    A = list("""_ABCDEFGHIJKLMNOPQRSTUVWXYZ""")
print(text)