sì jiǎo 
		the four corners (of a rectangle)
the eaves that the four corners of a building
		 
		
		
		
		
			 
		
				
		
			sǐ jiǎo 
		gap in coverage
gap in protection or defenses
neglected or overlooked area
dead end
		 
		
		
		
		
			 
		
				
		
			sī jiào 
		to whinny (of a horse)
to neigh
to shout
		 
		
		
		
		
					
				
		
			sì jiāo 
		suburb
outskirts (of town)