There are three degenerate species (6a, 6b, and 6c) that each feature a single connection between the bonder and a site. These species comprise the genus 6. Further, in this case genus 6 also comprises family F1. There are also three species (7a, 7b, and 7c) that each feature the bonder bridging two sites. These three species comprise genus 7 which, in turn, comprises family F2. The seventh species 8a features the bonder triply bridging all three sites. The species 8a is the sole member of genus 8 which comprises family F3. This pattern of a single genus comprising each family is not a general feature of the formalism. More complex worked examples below illustrate the broader utility of the taxonomic system.