(defun squirrels ()
		   (reset-domain)
		   (define (operator move-to)
		      ;;;; here comes your definition
		       )
		   (define (operator pickup-nut)
		      ;;;; here comes your definition 
		       )
		   (define (operator putdown-nut)
		      ;;;; here comes your definition 
		       ) 
		   )
	
