def translate_label(label_number: int) -> str:
	"""
	Get label from number

	If the number is 0, there is no label.

	Othewise, the number is the index in the sequence:

	```
	A1, B1, C1, D1, E1, A2, B2, C2, ...
	```
	"""
	if label_number == 0:
		return ""
	# get a letter A-E based on the modulo being 0-5 respectively
	letter = chr((label_number - 1) % 5 + ord("A"))
	# get the index number of the label
	number = (label_number - 1) // 5 + 1
	# return label name
	return letter + str(number)