example: gen-symmetrical* + gen-stacc*

here's an example of the combination of gen-symmetrical* + gen-stacc*

(length-list-plot
 (gen-stacc* (gen-length 
              (gen-symmetrical* 8 
                                (reverse (gen-divide 3 (primes 12))) 
                                :style 'unique
                                :type 'hierarchic)
              1/32)
             :symmetrical t
             :possible-stacc-lengths '(2/32 1/32 3/32)))