I am not sure if this is the right place to post this.  I am making a pair of bootees 
On Row 7 it says as follows: With Color B k 8, dec 2 sts, k 17, dec 2 sts, k8. (OK. I understand so far.) Continue in this manner to work 2-sf every other row above previous dec and alternate colors....... What does 2-sf mean? Is it a misprint? What? If necessary, I could post the whole pattern if that would help.
	
		
			
		
		
	
				
			On Row 7 it says as follows: With Color B k 8, dec 2 sts, k 17, dec 2 sts, k8. (OK. I understand so far.) Continue in this manner to work 2-sf every other row above previous dec and alternate colors....... What does 2-sf mean? Is it a misprint? What? If necessary, I could post the whole pattern if that would help.
 
	 
 
		 
			
		
		
		
	
	
			
		 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		