(module unary racket
    (provide (all-defined-out))

    (define (unary-zero) '())
    
    (define (unary-one) '(1))
    
    (define (unary-zero? n) (equal? n (unary-zero)))
    
    (define (unary-one? n)  (equal? n (unary-one)))

    ; Put your (define ...)s below for the procedures you are to write,
    ; being sure all are enclosed in this `module` declaration.




)