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		 I think during the summer after second year, you're still considered a second year student so it should be okay to take any left over courses, or re-take courses even. 
 
But I would think that you'd have to let someone know you're doing that, or ask about it, in case they don't let you into the program in level 3. 
		
	
		
		
		
		
		
  
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