def build_brick_pyramid(n, material = "*"):

    if n <= 1: return material

    counter = n - 1
    holder = ""

    begin = [" "] * ((n * 2) - 1)

    begin[counter] = material

    for _ in range(n):

        holder += "".join(begin)

        counter -= 1

        begin[counter] = material
        begin[-counter - 1] = material

        holder += "\n"

    return holder[:-1]

for y in range(1, 10):
    print(build_brick_pyramid(y))