P26: Enumeration of all independent sets in an input chordal graph

P26: Enumeration of all independent sets in an input chordal graph
Input:
A chordal graph $G=(V,E)$.
Output:
All independent sets in $G$.
Complexity:
$O(1)$ delay and $O(|V|(|V|+|E|))$ time and space for preprocessing.
Comment:
Counting all independent sets in an input chordal graph needs $O(n+m)$ time.
Reference:
[Okamoto2008] (Bibtex)