import random


def summon_blocks(board):
	"""Place 1-8 circles in random places on the speed board"""
	for _ in range(random.randint(1, 8)):
		x = random.randint(0, 4)
		y = random.randint(0, 4)
		while board[x][y] != 'g':
			x = random.randint(0, 4)
			y = random.randint(0, 4)
		board[x][y] = 'b'
	return board