knocks themselves	
out as a			result
boy	
puberty (virgin)	
man	
menopause	
grandfather	
girl	
puberty (virgin)	
woman	
niddah	
woman	
menopause	
grandmother	
null data	

			is knocked				knockees										
			out by				boy	puberty (virgin)	man	menopause	grandfather	girl	puberty (virgin)	woman	niddah	woman	menopause	grandmother		?
			boy														
			puberty (virgin)														
			man														
			menopause														
			grandfather														
knockeurs	girl														
			puberty (virgin)														
			woman														
			niddah														
			woman														
			menopause														
			grandmother														
			null data
			
jews africans chinese etc