def build_line(size, idx):
    line = ""
    spacer_len = ((size - (idx+1)) * 2)
    line += "-" * spacer_len
    letters = []
    for j in range(idx + 1):
        letters += ALPHABET[(size-1)-j]
    for k in range(idx - 1, -1, -1):
        letters += ALPHABET[(size-1)-k]
    line += "-".join(letters)
    line += "-" * spacer_len
    return line

def print_rangoli(size):
    for i in range(size):
        print(build_line(size, i))
    for i in range(size - 2, -1, -1):
        print(build_line(size, i))