#!/usr/bin/python3.5
a=22;b=44;c=55;d=None
if a and b and c and d:
	print("All not none")
elif b and c and d :
	print('A seems to be none')
elif b and c and d :
	print('A seems to be none')
elif a and c and d:
	print('B seems to be None')
elif a and b and d :
	print('C seems to be None')
elif a and b and c :
	print('D seems to be NOne')
else:
	print("Strange !!")

	



