def isAnonVariable(s):
	"""Specificies whether the given string is an anonymized variable name"""
	preUnderscore = s.split("_")[0] # the part before the function name
	return len(preUnderscore) > 1 and \
		preUnderscore[0] in ["g", "p", "v", "r", "n", "z"] and \
		preUnderscore[1:].isdigit()