(define bottles
  (lambda (n)
    (cond ((= n 0) (display "No more bottles"))
        ((= n 1) (display "One bottle"))
        (else (display n) (display " bottles")))
    (display " of beer")))

(define beer
  (lambda (n)
    (if (> n 0)
      (begin
        (bottles n) (display " on the wall") (newline)
        (bottles n) (newline)
        (display "Take one down, pass it around") (newline)
        (bottles (- n 1)) (display " on the wall") (newline)
        (newline)
        (beer (- n 1))))))

(beer 99)