apriori algorithm in Weka

Hi,
I'm working with the apriori algorithm in WEKA.
I'd like to know if it is possible to let the algorithm shows the contents of every L(K) set.
It gave me this as output:
Generated sets of large itemsets:


Size of set of large itemsets L(1): 6


Size of set of large itemsets L(2): 10


Size of set of large itemsets L(3): 6


Size of set of large itemsets L(4): 1


Best rules found:


1. D=no 5 ==> K=yes 5 conf=1)
2. K=yes 5 ==> D=no 5 conf=1)
3. E=yes 4 ==> K=yes 4 conf=1)


how can I get the list of selected itemsets after every iteration ??
thank you very much for your help :)
Yosr