def foo(answer_1, matrix_1, answer_2, matrix_2):
    candidate_1 = matrix_1[answer_1-1]
    candidate_2 = matrix_2[answer_2-1]
    final = set(candidate_1) & set(candidate_2)
    if len(final) == 0:
        return 'Volunteer cheated!'
    elif len(final) > 1:
        return 'Bad magician!'
    else:
        return final.pop()

for case in range(int(input())):
    answer_1 = int(input())
    matrix_1 = [[int(n) for n in input().split()] for _ in range(4)]
    answer_2 = int(input())
    matrix_2 = [[int(n) for n in input().split()] for _ in range(4)]
    answer = foo(answer_1, matrix_1, answer_2, matrix_2)
    print('Case #{}: {}'.format(case+1, answer))

def optimal_cookie(new_farm_cost, prodct_cookie, finale_cookie):
    income_cookie = 2.0
    optimal_spent = 0
    while True:
        new_farm_time = new_farm_cost / income_cookie
        expect_cookie = prodct_cookie + income_cookie
        wait_win_time = finale_cookie / income_cookie
        upgd_win_time = finale_cookie / expect_cookie + new_farm_time
        if wait_win_time > upgd_win_time:
            income_cookie = expect_cookie
            optimal_spent += new_farm_time
        else:
            optimal_spent += wait_win_time
            break
        return optimal_spent

for case in range(int(input())):
    answer = optimal_cookie(*[float(n) for n in input().split()])
    print('Case #{}: {:.7f}'.format(case+1, answer))

from collections import deque

def normal_war(ns, ks):
    c = 0
    while ns:
        n = ns.pop()
        if ks[-1] < n:
            ks.pop(0)
            c += 1
        else:
            i = 0
            while n > ks[i]:
                i += 1
            ks.pop(i)
    return c

def deceitful_war(ns, ks):
    while any(n < k for n, k in zip(ns, ks)):
        ns.popleft() and ks.pop()
    return len(ns)

for case in range(int(input())):
    _ = input()
    ns = sorted(float(n) for n in input().split())
    ks = sorted(float(n) for n in input().split())
    dw_answer = deceitful_war(deque(ns), deque(ks))
    nw_answer = normal_war(ns[:], ks[:])
    print('Case #{}: {} {}'.format(case+1, dw_answer, nw_answer))

def transpose(matrix):
    return [list(line) for line in zip(*matrix)]

def fill_line(r, c, left):
    width, length = sorted([r, c])
    matrix = [['*' for _ in range(length)] for _ in range(width)]
    for i in range(width):
        matrix[i][:left//width] = ['.' for _ in range(left//width)]
    matrix[0][0] = 'c'
    return matrix if r == len(matrix) else transpose(matrix)

def fill_rect(r, c, left):
    width, length = sorted([r, c])
    sq_length = int(left**0.5)
    matrix = [['*' for _ in range(width)] for _ in range(length)]
    if sq_length > width:
        i = 0
        while left - width > 0:
            matrix[i] = ['.' for _ in range(width)]
            left -= width
            i += 1
        if left == 1:
            matrix[i-1][-1:] = ['*']
            matrix[i][:2] = ['.' for _ in range(2)]
        else:
            matrix[i][:left] = ['.' for _ in range(left)]
    else:
        i = 0
        while i < sq_length:
            matrix[i][:sq_length] = ['.' for _ in range(sq_length)]
            left -= sq_length
            i += 1
        if left > sq_length:
            if left == sq_length + 1:
                matrix[i][:sq_length-1] = ['.' for _ in range(sq_length-1)]
                left = 2
            else:
                matrix[i][:sq_length] = ['.' for _ in range(sq_length)]
                left -= sq_length
            if i == len(matrix)-1:
                matrix = transpose(matrix)
            else:
                i += 1
            matrix[i][:left] = ['.' for _ in range(left)]
        elif left > 0:
            if left == 1:
                matrix[i-1][sq_length-1:sq_length] = ['*']
                left = 2
            matrix[i][:left] = ['.' for _ in range(left)]
    matrix[0][0] = 'c'
    return matrix if r == len(matrix) else transpose(matrix)

def mine_fill(r, c, m):
    width = min(r, c)
    left = r * c - m
    if width == 1:
        if left == 0:
            return None
        return fill_line(r, c, left)
    if width == 2:
        if left in [0, 2] or left % 2 == 1 and left != 1:
            return None
        return fill_line(r, c, left)
    else:
        if left in [0, 2, 3, 5, 7]:
            return None
        return fill_rect(r, c, left)

for case in range(int(input())):
    r, c, m = [int(n) for n in input().split()]
    answer = mine_fill(r, c, m)
    print('Case #{}:'.format(case+1))
    if answer is None:
        print('Impossible')
    else:
        for line in answer:
            print(''.join(line))