def getSurroundings(array, idx, window=2):
	"""
	Return words +-2 from idx
	"""
	surroundings = []
	if idx > 1:
		surroundings.append(array[idx - 2])
	else:
		surroundings.append('---')
	if idx > 0:
		surroundings.append(array[idx - 1])
	else:
		surroundings.append('---')
	if idx < len(array) - 1:
		surroundings.append(array[idx + 1])
	else:
		surroundings.append('---')
	if idx < len(array) - 2:
		surroundings.append(array[idx + 2])
	else:
		surroundings.append('---')
	return surroundings