def common_elem(start, stop, common, solution):
	"""
	Return the list of common elements between the sublists. 

	Parameters:
	start    -- integer
	stop     -- integer
	common   -- list of Decimal
	solution -- list of Decimal

	Return:
	sub -- list of Decimal
	"""
	sub = [elem for elem in common[start:stop] if elem in solution[start:stop]]

	return sub