rhombus

num = int(input())
for row in range(1, num):
    for y in range(1, n):

        # 1. Въвеждаме брой символи на страната на ромба
        count_side = int(input())
        row_symb = 1  # брой символи на 1-ви ред
        # 2. Брой редове на горната част на ромба = брой символи на страната на ромба
        increase = count_side
        count_rows = count_side
        # 3. Брой интервали на 1-ви ред = брой редове - 1
        start_space = count_rows - 1
        count_space = count_rows - 1
        # 4. Общ брой символи на най-дългия ред = 2 * Брой редове - 1
        max_symbols_row: int = 2 * count_rows - 1
        # Общо символи
        total_sym = 1
        check = False

        # reverse = 1
        # start_col = 1
        # end_col = max_symbols_row + 1
        for row in range(1, count_rows + 1):  # Брой редове for row in range(1, count_rows + 1):
            if check:
                break

            for col in range(1, max_symbols_row + 1):  # Брой символи на ред
                if col > row:
                    break
                print(' ' * count_space + '*' * row_symb, end='')
                count_space = count_space - 1
                row_symb += 2
                total_sim = total_sym + row_symb
                print()
                if row_symb > max_symbols_row:
                    check = True
                    break
        # Обратно
        check = False
        count_space = 1
        row_symb = max_symbols_row - 2
        for row in range(count_rows + 1, 2 * count_rows):  # Брой редове for row in range(1, count_rows + 1):
            if check:
                break
            for col in range(max_symbols_row - 2):  # Брой символи на ред
                if col > row:
                    break
                print(' ' * count_space + '*' * row_symb, end='')
                count_space = count_space + 1
                row_symb -= 2
                total_sim = total_sym + row_symb
                print()
                if row_symb < 1:
                    check = True
                    break