Fig. 3

Getting the siblings ARP, DRP, ADP, ARN, DRN, and ADN (blue) from an origin vertex labeled ADR (bold blue); its parents are \(AD, AR~and~ DR\) (red)
Getting the siblings ARP, DRP, ADP, ARN, DRN, and ADN (blue) from an origin vertex labeled ADR (bold blue); its parents are \(AD, AR~and~ DR\) (red)